Rifle Bolt M4 A1 Elite DX B.R.S.S
Hop up adjustable
Blowback system
B.R.S.S. recoil system
Length:810-890mm
Weight:2900g
Muzzle veloicty:312fps
Inner barrel:6.00mm
Tactic hand guard
Material:Aluminum, ABS, Nylon, Glass fiber and steel
Mag capacity: 140rds