New to KWA?s LM4 platform is the KR 7 gas blow back rifle. This LM4 variant boast the new KWA KeyMod rail interface that combines light weight ergonomics with rugged durability. These SPR?s are available in five lengths ranging from a 6 inch barrel all the way up to a 20 inch barrel to give the operator a rifle for every situation.  These modern features coupled with the tried and true designs of the standard issue AR15 make this rifle easily adaptable for any situation.

The KWA LM4 Professional Training Rifle is an ATF approved gas blowback AR style rifle available in the United States.  It features a new hop up system that was developed for the LM4 to improve range performance on the field.  An aluminum alloy receiver houses the full steel reinforced bolt carrier for strong reliable feedback.  The LM4 PTR buffer tube has the same diameter of a MilSpec Butt Stock which allows operators to customize to their weapon configuration.  In addition, the lower receiver can accept aftermarket AR15 pistol grips and trigger guards.  Other details such as the operational forward assist and bolt catch feature provides the user unparalleled realism by mimicking fundamental AR15 weapon manipulation. Similar to real AR15 style rifles the LM4 PTR?s modular design allows limitless customization options to best suit the individual?s training needs.

The AR15 was originally designed as part of the U.S. military?s initiative to develop a lighter smaller caliber weapon as the standard infantry rifle.  This innovative weapon utilized aircraft technology to lighten the rifle?s overall weight.  This led to the creation of the M16 which has served as the backbone of the U.S. Military for more than 40 years. Since its inception shorter variations of the M16 were developed for the US Special Forces and other branches of the military, such as the M4A1.

KWA Green Gas Performance Test

PARAMETERS

Assumption: Test how many shots a single KWA Green Gas can provide. Average number of shots in a 12 Oz Green Gas can is 500-1000.

Ambient Temperature: 78 Degrees Fahrenheit

Guns Tested: 1 LM4C, 1 AK KCR

CONTROL

LM4C GBB Rifle: 1x green gas + 4 LM4 Magazines
AKG-KCR: 1x green gas can + 5 AKG Magazines

Gas Capacity: filled each magazine for 30-seconds
Magazine Capacity: filled to max capacity of 40 rounds.

CONCLUSION

Test Fire: Kept reloading magazines with BBs until all gas was consumed. Process repeated until gas can was empty & could not achieve a 30-second fill. Magazines were cool to the touch after gas was empty and refilled without warming time.
Results:
LM4C GBB Rifle: 920 total rounds
AKG-KCR: 840 total rounds

Green Gas/GBB Videos

DID YOU KNOW?

To get optimal performance and increase efficiency out of your GBB magazines, you should prime the magazine before charging. Watch the video to learn how.

GBB RIGOR TEST

Watch as our friends at Sniper (Germany, KWA Authorized Dealer) put the KWA LM4 & ATP through freezing conditions.

Weight 8.6 lbs
Dimensions 41 x 10.25 x 3.75 in

Product Specs

– Length Retracted: 615.95mm
– Length Extended: 717.55mm
– Outer Barrel Length: 190.50mm
– Inner Barrel Length: 203.00mm
– Inner Barrel Diameter: 6.05mm
– Magazine Capacity: 40 Rounds
– Weight (with mag): 3.08kg
– Rate of Fire: 12+ RPS
– Velocity: 370-390 FPS
– Energy Output (with 0.20g BB): 1.20 Joules
– Gas System: Force Velocity
– Propellant: Green Gas

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