FM-9 replacement bolt assembly includes firing pin assembly and extractor assembly.
The FM-9 Bolt is made from 4140 chromoly steel as well as the cam roller and extractor.
After the machining process is finished they are professional finished in the latest industry standard of
QPQ Nitride for a 70 HRC surface Finish.
The Firing pin is precision turned from S7 tool Steel and hardened to 55 HRC for long lasting use.