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 Semi Auto Home Built Receiver Kit
M31 Suomi 36 Round Stick Magazine
M31 Hammer Spring
M31 Charging Handle Return Spring
M31 Semi-Auto Assembled Receiver (FFL Required)
M31 SEMI AUTO BOLT ASSEMBLY
M31 Rear Sight Assembly
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