M31 Buffer Spring Cup
This is the M31 Spring Cup used in the Buffer Assembly. This part stops the bolts in the rear position on the M31 Rifle. The other two components in this assembly are the Buffer Washer and the Return Spring (Sold Separately).
M31 Rear Sight Screw
M31 Hammer Spring
M31 FIRING PIN RETURN SPRING
M31 SEMI AUTO BOLT ASSEMBLY
M31Pin, Firing Pin Cross PIN QTY 2
M31 Semi Auto Receiver Assembly instructions and BATF Approval Letter
M31 Y-Series Striker
M31 Small Parts Kit
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