Thursday, April 29, 2010
All about AEG Batteries Part 2
There are a few types of chargers available. There are trickle chargers, which plug it into the wall, and then into the battery. This type of charger charges the battery at a very slow rate (typically under a few hundred mA, so charging usually takes several hours or overnight). They look like a regular wall mounted transformer (or a "wall-wort") with a wire plug that connects to the battery. There are different kinds, one for each different voltage of battery. They can and do overcharge the battery (since there is no way to tell if the battery is full and stop the charger); but there should be minimal damage to the battery since the current is so low.
Another kind of charger is the timer-based "fast charger". These chargers can charge up a battery in an hour or so. They typically feed it with a few amps of charging current. Most of these units (around $20-$30) are a small box with a few switches/dials for setting the battery voltage and/or the charge time or battery capacity. There is one wire that goes to a wall plug, and another that goes to the battery. They charge at a fast rate, and use a timer (that you either manually set for a certain amount of time, or calculated based upon the capacity that you told it your battery had). The problem with this is that the charger has no idea when your battery is really full. These can undercharge the battery (resulting in less battery time for your AEG, and possible memory effect if your battery capacity is more than the charger was set for. If there is still some power left in your battery, the charger will most likely overcharge it, which can cause it serious damage. It is important that you use a battery discharger to make sure that the battery is empty before you charge it back up if you are using with one of these chargers.
Peak Chargers (also called an "intelligent charger" or a "smart charger") can be acquired as well. This is the best type of charger you can have. These chargers can detect the slight drop in voltage that signals that the battery is full and automatically switch themselves off. These chargers also usually incorporate a discharger as well. These chargers typically cost $40 and up, and look similar to the timer based chargers, except that they are usually bigger and have more switches/dials/indicators on them. One very popular charger in the world of airsoft is the $50 TLP Intellicharger, that can run off 110 volt AC, 220 volt AC, and 12 volts DC. A peak detecting charger can help you ensure that your batteries are in tip-top condition and they charge batteries quickly. You can save a little bit of money by getting a cheap timer-based charger, but your batteries will thank you if you buy Peak instead. Before charging any NiMH batteries on your Peak Charger, ensure that it is designed for that or you may risk damaging the battery.
Executive summary
* mAh and Volts are what is important: how much juice you've got and how much it puts out
* Peak Chargers are best for conditioning your batteries
* NiCD Inexpensive and generally lower MAH, NiMH: Expensive but excellent performance
* While people 'know' there is some sort of 'memory effect' no one can explain how it works
All about AEG Batteries Part 1
mAh: MilliAmp Hours. A 1 mAh battery could last ~1 hour at at one milliAmp load.
Amps: Amperes, Current
Volts: Voltage
Ohms: Resistance
NiCd: Nickel Cadmium. A rechargeable battery chemistry.
NiMH: Nickel Metal-Hydride. A rechargeable battery chemistry.
LiIon: Lithium-Ion rechargeable chemisty (rare)
LiPoly: Lithium-polymer recheargeable chemsitry (expensive)
Battery Chemistries
There are 4 basic rechargeable batteries and 3 basic kinds of non-rechargeable batteries. The non-rechargeables are carbon-zinc ("Heavy-Duty" or "cheap-o Non-alkaline"), alkaline, and Lithium.
Disposable Batteries
Carbon-zinc batteries are the cheapest cells you can get, they have a fairly low capacity, but have a lower internal resistance than Alkaline (still not as low as NiCd or NiMh), so they can deliver a higher current than alkaline (hence the name "heavy duty").
Alkalines have a higher capacity than the carbon-zincs, but they have a very very high internal resistance. These cells do not deliver high currents well. Their high internal resistance causes them to "droop down" under load. The nominal voltage for alkalines is 1.5 volts, but the high internal resistance will cause them to droop down to less than 1.2 volts when heavily loaded. This is why higher powered devices (like Electric Blow Backs and cheap R/C cars) will work better with NiCds or NiMHs than with Alkalines. They are getting a higher voltage from the rechargeable batteries since the alkalines (that are supposed to be 0.3 volts more per cell) are actually providing less voltage. Alkalines also have a much different discharge graph than do the NiCds and NiMH. Imagine a graph with cell voltage as the vertical axis and the percent of charge remaining in the cell along the horizontal axis. Alkalines have a steadily downward sloping curve. This means that alkalines put out more voltage when they are fresh then when they are used up. They will only provide their best performance when new, and lose some of their power as they are used up.
The last type of non-rechargeable battery technology is the Lithium cell. These batteries have the most capacity, and are the most expensive. They are also lighter in weight and provide 1.7 volts per cell. They can also provide a higher current than alkalines, but not as much as the NiCd, NiMH or lead-acid. They are also very poor value for your money.
Rechargeable Batteries
There are 4 principle chemistries of rechargeable batteries: NiCd, NiMH, Li-ion (Lithium Ion), Li-Poly, and lead-acid.
Li-ion (not to be confused with non-rechargeable Lithium cells) are the newest type of rechargeable battery, and are the lightest that also have the highest capacity. They are designed primarily for capacity. These cells are very fragile. They cannot take the rough treatment of an AEG (high currents). They also tend to explode if they are not charged correctly. These cells are intended for use in high tech mobile stuff, like laptops and cell phones.
LiPoly batteries are also coming into usage for airsoft -- while voltage options remain limited, they are about the right size for airsoft, and if you take care to not heat up the gel-packs, are an extremely good high-ROF battery.
There is also the lead-acid type. This battery has two lead electrodes, with sulfuric acid as an electrolyte. They come in two varieties, "wet" cells (car batteries) that have liquid sulfuric acid (which can spill all over the place...not good at all) and SLA (Sealed Lead Acid, or "gel-cells") these are typically used in Uninterruptable Power Supplies for computers. SLAs use sulfuric acid jelly and are sealed so they cannot spill. These batteries are the toughest kind, readily providing huge currents. They are also really cheap. The one main problem is that they have lousy energy density and weight. Their energy density is about on par with NiCd: a gel-cell and a NiCd of the same physical size hold about the same mAh, but the LEAD-acid battery will be twice as heavy. lead-acid batteries are 2 volts per cell, and typically come in 2 volt, 6 volt, 12 volt, and 24 volt sizes.
The 2 remaining rechargeable types of batteries are the ones usually used in Airsoft: NiCd batteries, and NiMh batteries. Ni-Cd stands for nickel cadmium, and NiMh stands for nickel metal-hydride. NiMH batteries are a bit more expensive, but they have a higher capacity. NiMH are a bit more difficult to charge than NiCd, so make sure your charger is specified to handle NiMH if you use those type of cells. NiMH also have a higher rate of self discharge. These type of batteries will drain all by themselves if you just let them sit there. NiMH self discharges by about 2-3% a day, while NiCd discharges by about 1% a day. A full battery will be practically empty after sitting on the shelf for about a month.
The common perception is that a NiMh battery will last longer, but wont have the voltage of a NiCd with the equivalent number of cells. This is not always true. Older NiMh batteries usually were at a lower voltage per cell compared to Ni-Cds. The more recently produced Panasonic NiMh cells actually have an equal, if not higher voltage than that of NiCd cells. The main perk of using a NiMh battery is the higher capacity, up to 3300 MAH in the Sub-C sized cells.
Resistance
Each cell of a battery has internal resistance, which limits the power it can put out. A cell with the lower Internal Resistance (IR) will always be better. Early NiMh cells had a high IR making them not perform as well as NiCd or recent NiMh cells. Also, the connectors, wire, and battery bars in a pack all have resistance. Resistance is what is stopping the flow of electrons. The lower resistance in everything, the better. The stock connectors on pack are horrible. They have high resistance, and over time will wear out and get even worse. Getting some low loss connectors such as Deans Power Plugs will help to cut down on the resistance. The wire is also a place where you can cut down on the resistance. You can use some 12 gage wire in place of the thin wire that some pack have. Also, if you look at regular battery pack the cells are connected with thik, foil like strips of tin. These are horrible compared to solid copper, or silver and gold plated battery bars you can get. Each of these things alone may not seem like a big deal, but by replacing the connectors, wire, and battery bars you can reduce the resistance in the circuit.
Batteries, Airsoft and You
Batteries for airsoft have two general characteristics, voltage and capacity. Capacity is measured in mAh. Voltage is measured in volts. Amps is a measure of how strong a current is. Capacity is just how much power the battery can hold; it is basically how long you can use the battery before it stops being able to power the system. Amps measures how much power a battery can push out. Voltage is how fast it pushes.
Think of a battery as a water balloon. The mAh measures how much water is in the balloon. Voltage tells you how big a hole you have in neck of the balloon. Amps tells you how much pressure is being exerted on the balloon. Resistance measures how much fabric you have blocking the water from coming out.
So...more or less mAh is more or less Water. Basically what volume of water you have to work with. Voltage tells you how much water you can let out of the balloon at one time. A bigger neck on a balloon will let more water out at one instant. More or less amps measures how fast the water is moving out of the balloon. More pressure on the balloon makes the water come out faster. The Resistance over the neck slows the water from flowing. The less resistance, the more efficiently the water will be delivered.
The main things Airsofters are concerned with are how much water they have and how much they can deliver at one time. mAh and Volts. For advanced users, the discharge rate (measure in Amperes, varies from 20A ro 35A -- 30A is ideal)
You should usually aim to get the battery with the highest mAh rating you can because it will last longer. This is why it is preferable to use a "large" type battery (generally between 1200mAH and 3000mAH) as opposed to a "small" type battery (generally 600 mAh). There will be no adverse side effects to using a battery with a higher capacity; it will simply last longer before it runs out of juice. A battery with a higher mAH rating will not damage a gun.
The capacity rating of milliAmp hours means that if you drew the rated amount of milliamps from the battery, that the battery will last for 1 hour before "dieing". For example, a 3000 mAH battery can deliver 3 amps (1 Amp = 1000 milliamps) for one hour continuously, 6 amps for 30 minutes, or 1.5 amps for 2 hours. A battery's rating is usually "\20H", meaning that the rating is for 20 hours. For example, a 3000 mAH battery is specified to deliver 150 mA for 20 hours. The batteries will have a slightly less capacity in an AEG application (where they will be providing a high current for a short time) since the higher load is more stressful for the batteries, but you can still compare mAH ratings between batteries.
The battery's voltage determines how much power the motor will have. Stock AEGs take an 8.4 volt battery. Upgraded AEGs sometimes need higher voltage battery packs, such as 9.6, 10.8, and the insane 12 volt pack. The higher voltage will make the motor turn faster (higher ROF) and/or harder (to drive those bigger springs). Please also note that a higher voltage battery will put much more stress on your motor and the mechbox internals. You can easily tell what voltage a battery has by counting the number of cells; each NiCd or NiMH cell is nominally 1.2 volts. A 10 cell pack has 12 volts. A 7 cell pack is a standard 8.4 volt pack. The power of the motor (measured in either watts(W) or Horsepower(HP), 746 W = 1 HP) is a function of the voltage it is being fed and the Current it is drawing. Watts equals Current (in Amps, 1000 Milliamps = 1 Amp) times voltage. Please note that the motor will draw more amps running at a higher voltage since it acts somewhat (not quite, but good enough for a simple comparison) like a resistor. The motor follows Ohm's law: Current(in amps) = Voltage divided by Resistance (in ohms). The resistance of the motor stays somewhat constant. So, the amount of current the motor draws will increase linearly with the voltage. Since the power of the motor is volts multiplied by current (which also increases with the voltage), the motor's power increases with the square of the voltage, while the current increases linearly with the voltage increase.
Wednesday, April 21, 2010
New G&G Releases
Tuesday, April 20, 2010
Thoughts on Airsoft guns treated as firearms in the Philippines
If you are aware of what's happening around the world, you've probably heard that our country, the Philippines, will be having its elections this coming May. And, for better or for worse, airsoft has been suspended to ensure a safe and hassle free elections.
In my opinion, I don't mind the fact that our government is trying to keep the process as safe as possible. My only complaint is that an Airsoft gun is classified as a firearm in accordance with Resolution No 8714 . Because of this law, we are required to apply for a permit to carry firearms. This just shows an ignorance on the part of the Philippine government as to what the real classification of a firearm is. Didn't anyone explain to them exactly what an Airsoft gun is? So, that leaves us as one of the few countries that classify airsoft guns as real firearms.
Recently, a lawyer and airsofter as well, lobbied for a petition exempting airsoft guns from the gun ban. Here is a copy of that very document:
Republic of the Philippines
SUPREME COURT
Manila
ATTY. REYNANTE B. ORCEO,
Petitioner;
– vs – S.P. CIVIL CASE NO. ____________
FOR: Certiorari and Prohibition
COMMISSION ON ELECTIONS,
Respondent;
X - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - X
P E T I T I O N
PETITIONER, by himself, to the Honorable Supreme Court, respectfully states:
PREFATORY STATEMENT
This is an original action filed pursuant to Rule 65, 1997 New Rules of Civil Procedure. The matter involved is the constitutionality and validity of Resolution No. 8714 dated December 16, 2009 promulgated by the Commission on Elections (COMELEC) in the exercise of its rule making function including in the definition of Firearm toy gun known as Airsoft Guns and their replica/imitation.
The COMELEC in including Airsoft Guns and their replica/imitation in the definition of firearm had gravely abuse its discretion amounting to lack or excess of jurisdiction for there is nothing in Republic Act No. 7166 or An Act
Providing for Synchronized National and Local Elections and for Electoral Reforms that embraced the term Airsoft Guns and their replica/imitation.
It is the intendment of the law that the firearm contemplated in R.A. No. 7166 refers to real firearm that is known in its common and ordinary usage.
THE LAW
8. On November 26, 1991, Republic Act No. 7166 otherwise known as an act providing for synchronized national and local elections and for electoral reforms was approved.
8.1. Section 32 paragraph 1 thereof provides the following provision:
“Who May Bear Firearms. - During the election period, no person shall bear, carry or transport firearms or other deadly weapons in public places, including any building, street, park, private vehicle or public conveyance, even if licensed to possess or carry the same, unless authorized in writing by the Commission. The issuance of firearm licenses shall be suspended during the election period”
9. To implement the aforementioned law, the COMELEC promulgate on December 16, 2009 Resolution No. 8714 entitled, to wit:
“Rules and Regulations on the: (1) Bearing, carrying or transporting of firearms or other deadly weapons; and (2) employment, availment or engagement of the services of security personnel or bodyguards, during the election period for the May 10 ,2010 National and Local elections.”
9.1. Section 2 (b) of the said resolution defined firearm as follows:
“Firearm shall refer to the “Firearm” as defined in existing laws, rules and regulations. The term also includes airgun, airsoft guns, and their replica/imitation in whatever form that can cause an ordinary person to believe that they are real”
– Emphasize supplied. Resolution No. 8714 dated December 16, 2009 is herein attached as Annex “A” and made an integral part hereof.
10. On December 18, 2009, Resolution No. 8714 was published in the Philippine Daily Inquirer and the Manila Times.
GROUNDS RELIED UPON IN SUPPORT OF THE PETITION
THE COMELEC IN ISSUING RESOLUTION NO. 8714 DATED DECEMBER 16, 2009 COMMITTED GRAVE ABUSE OF DISCRETION AMOUNTING TO LACK OR EXCESS OF JURISDICTION INSOFAR AS INCLUDING AIRSOFT GUNS AND THEIR REPLICA/IMITATIONIN THE TERM FIREARM.
DISCUSSIONS
Petitioner is a real party in interest
Petitioner as member of the Philippine Bar has the responsibility to uphold and defend the Constitution as embodied in the Code of Professional Responsibility.
More importantly, petitioner is playing the sport of airsoft since the year 2000 and playing the game regularly every Sunday or upon invitation with the rest of the other members or when his work schedule permits him to do so. The continuing implementation of the subject resolution will put petitioner in immediate and imminent danger of sustaining direct injury if caught in possession of airsoft gun and their replica/imitationin going to and from the game site and playing the sport for such act petitioner will be subjected to a penalty of imprisonment of not less than one year but not more than six years and shall not be subject to probation with disqualification to hold public office and deprivation of the right of suffrage.
At issue herein is the constitutionality and legality of Resolution No. 8714 issued by the COMELEC in the exercise of its rule making power that is tainted with grave abuse of discretion amounting to lack or excess of jurisdiction that calls for the exercised by the court of its power of judicial review.
COMELEC’S Grave abuse of discretion
As stated, there is no law at present that covers airsoft guns. Though, several bills are now pending in the 14th Congress that defines and governs the use of airsoft guns but nothing in these pending bills classified airsoft guns and their replica/imitationto mean as firearm.
Among the pending bills are as follows:
a. SB No. 655 - introduced by Senator Jinggoy Estrada entitled “an act prohibiting the manufacture and sale of imitation firearms”
Abstract – permanently affixed, a blaze orange plug inserted in the barrel of such toy, look-alike or imitation firearm.
b. HB No. 5449 – introduced by Rep. Rufus B. Rodriguez entitled “an act regulating the importation, manufacture, sale, use and transport of airsoft rifles/pistols and for other purposes”
Abstract: seeks to limit the registration of airsoft rifle/pistol to those not exceeding 550 feet per second velocity using .20 gram plastic pellets.
c. HB No. 2916 – introduced by Rep. Rufino B. Biazon entitled “an act repealing Letter of Instructions No. 1264 of President Ferdinand E. Marcos signed on July 31, 1982 banning the importation, manufacture, distribution, sale and display of certain types of toy firearms and explosives”
Abstract – the bill seeks the repeal of LOI 1264 which banned the importation, manufacture, distribution, sale and display of toy firearms and explosives.
Republic Act No. 7166 was enacted during the 8th Congress. It came from House Bill No. 34811 and Senate Bill No. 1861. The committee report on both bills did not include what is now Section 32 of RA No. 7166.
Due to the conflicting versions of the two bills, a bicameral committee conference was held to resolve the conflicts. As a result, a bicameral committee report (BICAM) was approved.
In the House deliberations of the BICAM, no interpellations or deliberations were made insofar as the provision on carrying of firearm is concerned. However, in the Senate the same provision was a subject of interpellations, to wit:
“Senator Guingona. Yes, Mr. President. The question is: If the members of the military or the PNP are not deputized for electoral duties, can they carry firearms, in accordance with the performance of their duties, outside of electoral duties?
Senator Gonzales. Mr. President, we have paragraph (q) of Section 261, Prohibited Acts, and it says:
(q) Carrying firearms outside residence or place of business.
And it applies to any person who, although possessing permits to carry firearms, carries any firearm outside his residence or place of business during the election period unless authorized in writing by the Commission.
Senator Guingona. So, that is absolute.
Senator Gonzales. There is absolute prohibition, Mr. President”
– Record of the Senate, page 555, Tuesday, November 19, 1991.
From the foregoing deliberations, the firearm contemplated by R.A. No. 7166 refer to its ordinary usage to mean real firearm as distinguished from toy gun, replica/imitationor airsoft guns.
As explained by Senator Gonzales, when an unauthorized person is caught carrying a firearm during the election period he will be charged for Prohibited Acts an offense punishable under the Omnibus Election Code[1] that carries a penalty of imprisonment of not less than one year but not more than six years and shall not be subject to probation with disqualification to hold public office and deprivation of the right of suffrage[2].
Such being the case, the inclusion of airsoft guns and their replica/imitationin the subject resolution will now make the possessor thereof criminally liable – a situation not contemplated by B.P. No. 881 and R.A. No. 7166.
As defined under existing laws on Firearms, R.A. No. 8294 approved on June 6, 1997 or an act amending the provisions of P.D. No. 1866, as amended, entitled codifying the laws on illegal/unlawful possession, manufacture, dealing in, acquisition or disposition of firearms – airsoft gun and their replica/imitationis not among those included and classified as such.
R.A. No. 8294 classified low powered firearm, such as rimfire handgun, .380 or .32 and other firearm of similar firepower and high powered firearm that includes those with bores bigger in diameter than .38 caliber and 9 millimeter such as caliber .40, .41, .44, .45 and also lesser calibered firearms but considered powerful such as caliber .357 and caliber .22 center-fire magnum and other firearms with firing capability of full automatic and by burst of two or three.
Thus, the COMELEC in issuing the subject resolution have made a new law on firearm or have amended the law on firearm – an act beyond its power and authority.
Resolution No. 8714 is not in accordance with State Policies
The 1987 Constitution provides the following provisions, to wit:
“The State recognizes the sanctity of family life and shall protect and strengthen the family as a basic autonomous social institution. X X X X”
– Article II, Section 12, 1987 Constitution.
“The State recognizes the Filipino family as the foundation of the nation. Accordingly, it shall strengthen its solidarity and actively promote its total development”
– Article XV, Section 1, 1987 Constitution.
“The State shall give priority to X X X X sports to foster patriotism and nationalism, accelerate social progress, and promote total human liberation and development.
– Article II, Section 17, 1987 Constitution.
Guided by these constitutional precepts, the COMELEC in the exercised of its rule making power must conform to these policies and in the law it is sought to enforce. Its act must be within the scope and consistent with the law it seeks to apply and implement and not even the temporary prohibition of possessing airsoft gun and their replica/imitation during the election period will justify the COMELEC for issuing the subject resolution for there is no law that authorizes COMELEC to do so.
An Airsoft gun is an essential component to play the sport without which playing airsoft is nothing. The use of airsoft gun necessarily includes the transport and possession thereof in going to and from the game site.
In including airsoft gun within the meaning of firearm, the subject resolution in effect criminalizes the sport and playing the game make it irrelevant if one’s possession of airsoft gun and their replica/imitation is now covered by prohibited acts notwithstanding that there is still no law that governs the use thereof.
Equally enshrined under the constitution is the protection and strengthening of the family as a basic autonomous social institution. Playing airsoft has become a bonding moments amongst families. Petitioner is playing airsoft with his brother and nephews, sons played with their father, husband with his wife, and brother with his brother.
As a basic foundation of the nation and as declared under The Universal Declaration of Human Rights, families are entitled to protection by society and the State[3]. They are free to choose and enjoy their recreational activities. They are free to enjoy it among themselves or in the company of others. They could prefer going to malls, watch movies, dine together or enjoy playing the same sport.
These liberties cannot be abridged by the COMELEC that do not even have the authority and power to make, expand and amend existing laws. In the same token, the subject resolution now criminalizes even the bonding of families who prefer playing together the sport of airsoft.
PRAYER
WHEREFORE, it is respectfully prayed to the Honorable Supreme Court that judgment be rendered as follows:
1. Annulling Resolution No. 8714 dated December 16, 2009 insofar as including airsoft gun and their replica/imitationwi thin the meaning of firearm and declaring it as unconstitutional and invalid.
2. Commanding the Commission on Elections to desist from further implementing Resolution No. 8714 dated December 16, 2009 insofar as airsoft gun and their replica/imitationis concerned.
3. Commanding the Commission on Elections to amend Resolution No. 8714 dated December 16, 2009 by removing airsoft gun and their replica/imitationwi thin the meaning of firearm.
4. Commanding the Commission on Elections to issue resolution ordering the Armed Forces of the Philippines, Philippine National Police and other law enforcement agencies deputized by the COMELEC to desist from further enforcing Resolution No. 8714 dated December 16, 2009 insofar as airsoft gun and their replica/imitationis concerned.
Other reliefs just and equitable under the premises are likewise prayed for.
Quezon City for the City of Manila. January 12, 2010.
Here is the reply of the Supreme Court after a dew weeks:
The Supreme Court in a En Banc Decision dated March 26, 2010 in the case entitled Atty. Reynante B. Orceo vs. COMELEC, G.R. No. 190779 partially granted the petition. The Decision was received on April 15, 2010.
The dispositive portion of which reads as follows:
WHEREFORE, the petition is PARTLY GRANTED insofar as the exclusion of replicas and imitations of airsoft guns from the term “firearm” is concerned. Replicas and imitations of airsoft guns and airguns are hereby declared excluded from the term “firearm” in Resolution No. 8714. The petition is DISMISSED in regard to the exclusion of airsoft guns from the term “firearm” in Resolution No. 8714. Airsoft guns and airguns are covered by the gun ban during the election period.A Motion for Reconsideration of the Decision to include airsoft gun will be filed.
Source: http://sc.judiciary.gov.ph/jurisprudence/2010/march2010/190779.htm
What really raises questions in this decision is an imitation of an airsoft gun being unclassified as a firearm. What is an imitation of an airsoft gun? Doesn't that mean that a spring gun is an "imitation-imitation" of a real gun? Hmmm...
We can only hope for the best for our beloved sport in the Philippines. Hopefully, we can have a breakthrough soon.
Watch this space for more updates!
Please comment!
The A&K Magpul Masada
Today, we will have a look at A&K's attempt at the ACR, sometimes known as the Bushmaster ACR. But, first, let's have some history on this gun.
"The Masada rifle was developed by US-based company Magpul Industries, which became famous for its line of aftermarket accessories and replacement parts for firearms. Work on the new modular rifle, suitable for civilian, police and military applications and designed more or less along the lines of the SCAR program commenced in 2006. First prototypes were shown to the public in 2007 at ShotShow, and early in 2008 it was announced that new rifle (previously known as Masada) will be mass produced by famous American gun-making company Bushmaster Firearms. Current plans are to introduce civilian and police (semi-automatic) versions in mid-2009, with military select-fire version scheduled for production in late 2009. It is also planned to introduce Masada / Bushmaster ACR rifles in 5.56mm / .223 Rem caliber; other calibers might follow later. Magpul also is developing a 7.62x51 / .308 Win version of the Masada / ACR rifle, provisionally known as Masoud. It is still in early development and no information is available on its date of release to the public.
The Masada / Bushmaster ACR rifle is gas operated, semi-automatic or selective-fired (Military version only) weapon of modular design. It utilizes aluminum alloy upper receiver, with polymer pistol grip / trigger / magazine housing (lower receiver) unit which is attached to the upper receiver using cross-pins. Various types of lower receivers are planned to accommodate different types of magazines (i.e. Ar-15 type magazines as opposed to AK-type magazines). The trigger / manual safety unit is made as a single removable item, and it mostly utilizes Ar-15-compatible parts. The barrels of ACR / Masada are quick-detachable, with short-stroke gas pistons attached to each barrel. To remove the barrel (for change, inspection or maintenance), user has to remove polymer handguards, then swing down the wire lever, located below the barrel, turn the barrel to unlock and pull it forward and out of the receiver. All barrels are free-floated within handguards to achieve consistent accuracy. Bolt group also is made as a single unit, with captive return spring and rotary multi-lug bolt which locks directly to the barrel breech. The standard magazine housing, which is suited to accept Ar-15 type magazines, has ambidextrous magazine release buttons. The ambidextrous bolt stop release button is located at the front of the triggerguard. Safety lever is also ambidextrous, and charging handle can be installed on either side of the gun, depending on user preferences. Depending on the version (or user preferences) ACR / Masada rifle can be equipped with various Magpul-made buttstocks, fixed or side-folding, and adjustable for length of pull (some also with adjustable cheek rest). Each Masada / Bushmaster ACR rifle gas integral Picatinny rail on the top of the receiver; additional accessory rails can be installed on forend according to user preferences. Masada / Bushmaster ACR rifle can be fitted with removable iron sights, and/or with any optical or night sight with appropriate mounting."
Source:http://world.guns.ru/civil/civ018-e.htm
Phew... Alright. With that out of the way, we can get to business.
I was lucky enough to purchase my Tan colored Masada at a reputable local dealer for AS guns. At the cost of 8000 pesos (about 180$), it was a very good buy and came in a huge box with the words "Advanced Combat Rifle" on all sides. It's not a very inconspicuous package, believe me.
Initial Impressions
Out of the box, it was a very intimidating rifle to look at, let alone be on the receiving end. The body is made of ABS plastic, while the upper receiver is metal. It comes with one tan Pmag high-cap Magazine. It has a collapsable and very adjustable stock with interchangeable cheek-piece. Overall, its very solid to hold and has no wobble that you might expect from free floating barrels. The battery is located in the handguard. The handguard is easily removable with just a single pin holding it to the body of the rifle. The barrel is one-piece removable, just like the real-steel versions. The sights are decent, unfortunately not the Magpul MBUS versions, but they do their job.
Initial Testing
Initial firing showed consistent 410-430FPS with stock spring and motor. The groupings at a range of about 30 feet was about 5in in full auto. as always for most A&K models, their guns are high FPS and decent ROF out of the box.
Field Testing
My first game with this gun showed me two things: One, you need at least a 2 point sling on this gun; it's very heavy. Two, be wary of its barrel snagging on vines or plants as you rummage through the field. It's very solid to fire on the move and accuracy is good with very little hop-up adjustment. I didn't drop the gun during the game, but it looks solid in terms of build. In my opinion, an upgrade to at least a lithium polymer battery is all it needs.
Last Words
This gun is a great alternative to a SCAR and in some respects come's out as a more intimidating piece of kit. Unfortunately, it doesn't share much with the M4 platforms, but a few rails, sights and grips can make this gun look the business.
Note: Prices of guns in the Philippines are significantly less than most countries. Special permits are also required for owning and using AEGs or GBBs.
Greetings!
Welcome to Airsoft News and Views!
Let's start with introductions, I am Enrico, 18 yrs old, a student from the Philippines and an avid airsofter. I have been playing for about two years and usually play once a month. I have only a few Electric guns in my arsenal at the moment and one gas blowback rifle. With your help, WE can make this an educational site for people of all ages and skill levels to share their views and insights on our favorite sport.
Feel free to look around and introduce yourselves!
Best regards,
Enrico