M31 Semi Auto Receiver Assembly instructions and BATF Approval Letter
This packet includes the steps necessary to build your own M31 semi auto receiver. The BATF letter included lays out the rules for manufacturing and proper marking. Please look at PN M31S-GNPT-XX09-BKXX-RCKT for a complete diagram.
*This Package is for the receiver only, not the complete rifle.
M31 Semi Auto Charging Block
M31 Rear Sight Screw
ASR Buffer Spring
M31 Firing Pin Retainer
M31 80% Receiver Tube
MG34 FA Bolt Assembly
M31 Receiver Center Section semi auto
MG34 Semi Auto Small Parts Kit
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