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 Small Parts Kit
M31Trigger Only Assembly
BOTTOM PLATE FOR SEMI-AUTO M2
MG34 Barrel Return Plunger Spring
M31 Trigger Bar
ASR Two Stage Trigger Kit
MG34 Grip Frame Split Pin
M31 Charging Handle Return Spring
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