" I seek only impregnable recoil ."
Built Material : Aluminum/ABS, Nylon & Glass Fiber and Steel
Shooting Modes : Semi, Full-Auto
Magazine Capacity : 300rnd
Length : 805mm-855mm
Weight : 2850g
Hop-up : Adjustable
Blow-back : Yes
Recoil shock : B.R.S.S. system
Power : 95m/s(312fps) and 120m/s(393fps)
Power Source : 7.4V22C(Li-Po) or 11.1V15C(Li-Po) or 9.6V(Ni-mh or Ni-Cd)
Color : Black / Tan
Bolt Airsoft first product B4A1 (M4A1) with our new electric gun system (Bolt Recoil Shock System) now is available.BOLT B4 SOPMOD, a revolution product that has standing out in AEG market. It has stronger material and better design on the rifle structures.New items of BOLT manufactured new Gears to increase the durability, a 6mm Accurate inner barrel to perform better shooting, and a nicely done reality tactical rail to make it handsome; BOLT designed rear wire structure to allow player to place battery in the stock, new bolt plate design and hop-up structure to smooth the movement and to convenient the hop-up adjustment. BOLT B4 SOPMOD will bring you a new vision to AEG rifles.