GHK M4 V3 GBB Steel Bolt Carrier Assembly

The GHK Steel M4 V3 Bolt Carrier Assembly features a 2024 V3 nozzle, increasing the cylinder capacity by 20%. The optimized BBs feeding stop point improves ballistics, while the correction plane at the rear end of the bolt carrier ensures smooth operation. design for replacing M4 GBB V3 or upgrading M4 GBB V2 to V3. Specification Material : Steel ( bolt carrier body ) Weight : 315g