M31 Semi Auto Home Built Receiver Kit
Approximately Ships in 8 weeks
This parts set is the for the manufacturing of a home built semi auto M31's receiver. These parts are available in this set, and are also sold individually.
The assembly, machining, and welding of these parts constitutes the manufacturing of a firearm and the BATF Letter provided with this set must be followed.
M31 Buffer Spring Cup
M31 FIRING PIN RETURN SPRING
M31 Trigger Spring
M31 Small Parts Kit
M31 Safety Spring
M31 End Cap SEMI AUTO, SPRING GUIDE SHORTENED.
M31 Semi-Auto Assembled Receiver (FFL Required)
M31 Firing Pin Bushing
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