M4 RIS, Chinese made, 退鏜 , WA replica
Feel shooting real gun with Strong blow back
Magazine: 50 Rounds ( 6mm )
Length: 680-868mm
Weight: 4830g
Muzzle Velocity: 380-410 FPS with 0.2g BB

Optional upgrade kit (Aluminum Buffer (Hard Recoil)) is available as separated item

Optional item(s) (can be purchased separately)