This high-speed/light-weight kit is designed to increase the rate of fire of Marui M4 GBB Rifles. Zero One Airsoft,Airsoft,Air Soft,Dorset,Hampshire,softair,,Airsoft,AR15,BB Gun,Fire,M16,Pellet,Rate,Rof,Softair,TM,AR-15,,Angry,Gun,High,Speed,Super,Recoil,Buffer,Kit,for,Marui,GBB,M4 |