This precisely machined conversion kit allows you to fully convert a VFC M4 or HK416 V3 GBBR into a bolt-action-only configuration. Ideal for scenarios where semi-automatic operation is restricted – such as regulated games or countries with specific airsoft rifle rules.
The kit includes a CNC-machined upper receiver with charging handle and replaces the original upper assembly entirely. Without a blowback mechanism, it delivers a sealed and stable system for maximum precision.