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 Hammer Spring
M31Trigger Only Assembly
M31 80% Receiver Tube
M31 Firing Pin
M31 Rear Sight Assembly
M31 End Cap SEMI AUTO, SPRING GUIDE SHORTENED.
M31 Safety Spring
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