ECHO1 MK1 SR556 6" QUICK DETACH BARREL EXTENSION IN BLACK - OEM BY MADBULL AIRSOFT HPA System Muzzle Velocity: 350 FPS (w/

Muzzle Velocity: 350 FPS (w/

Extra Battery

50" Handle Material:Aluminum Color:Black Frame/Liner:Stainless Steel Weight:4

Uniform shot-to-shot air volume discharge allows for unmatched velocity consistency

-(Ballistic plate and soft armor are not included)

ECHO1 MK1 SR556 6" QUICK DETACH BARREL EXTENSION IN BLACK - OEM BY MADBULL AIRSOFT HPA System Muzzle Velocity: 350 FPS (w/MadBull has partnered with Echo1 to bring to you Echo1s MK1 SR 5. 56 Quick Detach Barrel Extension. The MK1 is a unique barrel extension because of its quick detach feature. This allows you to attach or remove the barrel extension in one simple step. The MK1 package comes with the barrel extension and flash hider specially designed for quick detach function. There are 3 lengths of barrel extensions. The 6 and 6. 75 comes with a standard flash hider