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12" KeyMod Railed rifle from KWA

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The KeyMod universal interface system is a new innovation in the firearm industry used for weapon ergonomics and mounting tactical accessories. The KeyMod design was developed by VLTOR Weapons Systems and was open to the public domain by Noveske Rifleworks for all manufacturers to use.

KWA recognizes the benefits of this new design which allows for a wide range of accessory flexibility and weight reduction when compared to traditional quad rail systems and are proud to announce the KR KeyMod Weapons Platform. The KR series have been produced in several different lengths to accomodate a variety of needs.

The KM4 KR12 features a full metal alloy lower receiver that ensures the weapon is strong and robust. A metal flat top railed receiver allows the user to attach various optics. A six position LE stock gives the operator the most comfortable shooting position. Equipped with the proven 2GX gearbox and enhanced 2G hop-up bucking, the KM4 KR12 provides long lasting reliability and performance for those seeking a mission ready combat rifle.


  • Inner Barrel Diameter: 6.05 mm
  • Inner Barrel Length: 425 mm
  • Outer Barrel Length: 16"
  • Velocity: 380-410 FPS
  • Full metal alloy flat top upper receiver
  • Full metal alloy lower receiver
  • Adjustable Hop-Up
  • KWA 2GX gearbox
  • KWA 2G high performance bucking
  • Adjustable/Removeable front and rear sights
  • 12" Free float KeyMod rail system
  • 6 position battery crane stock
  • Semi and full auto select fire
  • Includes 2" polymer rail segments (2)
  • Includes 1 K120 Polymer Midcap Magazine
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Founded in 2004, Airsoft Outlet Northwest (AONW) is the leader in quality airsoft and tactical gear in the Pacific Northwest. We're dedicated to providing the best service and products for our customers! We believe in honest and fair treatment of our customers while delivering superior value at a reasonable cost. That's why we offer the best warranty in the industry by providing in house warranty service on many quality brands like Classic Army, G&G, TopTech, and Echo-1. If you buy from us then you can rest assured knowing that you'll be taken care of.