The internal hammer and knocker assembly of a gas blowback rifle takes an incredible amount of abuse from heavy recoil and high-pressure gas expansion. Because of this constant stress, maintaining precise component tolerances is absolutely critical for consistent cycling. If your system is suffering from gas flow inconsistencies or trigger group lockups, a worn or sheared pin is likely the culprit. The VFC M4 V3 GBB Valve Knocker Pin is a direct factory replacement engineered specifically to restore crisp, reliable valve actuation in your generation three gas system. Constructed from a hardened steel alloy, this component easily withstands the constant impact from the hammer group and valve knocker. It drops seamlessly into VFC M4 V3, M733, and BCM V3 platforms with zero modifications required. Finished in a polished silver color, the pin offers excellent wear resistance while making visual inspections incredibly simple during routine teardowns. Weighing practically nothing, this single replacement pin ensures your rifle stays fully operational and reliable under the most demanding field conditions.
Check out more Original Parts
Compatibility:
Includes: