Rare Arms SR-762 shell ejection GBBR (Full AUTO version)

Rare Arms 2017 new product SR-762 released that provided with fully automatic shooting mode. ----------------------------------------------------------------------------------- SEMI & AUTO shooting mode. ” outer barrel with KAC type QDC muzzle brake. rifle assemble real buffer tube with inch screw thread and tactics buttstock. precise inner barrel. Inner diameter , overall length 365mm. of receiver & URX3 rail system material use 6061 aluminum alloy with precision CNC machining. aluminum alloy component treat with harden anodizing. bolt carrier material use steel alloy with precision CNC machining , with hard chrome plating treatment, result in aerodynamic efficiency and recoil improvement. bolt head use material 7075 aluminum alloy treat with harden anodizing, result in light weight, more durable, enhance shell ejection stability. go with new de