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 Spring Mount Forward Sear
M31 Receiver Center Section semi auto
M31 Shroud Shim
M31 Trigger Spring
M31 Lower Receiver Section Machined
M31 Rear Sight Assembly
M31Trigger Only Assembly
M31 Semi Auto Home Built Receiver Kit
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