M31 Semi Auto Charging Block
The M31 Charging Block connects to the stock charging handle but is taller for better engagement into the Semi auto bolt.
M31 Trigger Bar
M31 Trigger Spring
M31 Semi Auto Home Built Receiver Kit
M31 Firing Pin Bushing
M31 Lower Receiver Section Machined
M31 End Cap SEMI AUTO, SPRING GUIDE SHORTENED.
M31 Spring Mount Forward Sear
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