Rifle Bolt M4 A1 Elite SDD B.R.S.S
Hop up adjustable
Blowback system
B.R.S.S. recoil system
Length:720-800mm
Weight:2800g
Muzzle veloicty:320fps
Inner barrel:6.00mm
Inner barrel lenght:300mm
Tactic hand guard
Material:Aluminum, ABS, Nylon, Glass fiber and steel
Mag capacity: 140rds