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 FIRING PIN RETURN SPRING
M31Trigger Only Assembly
M31 Charging Handle Return Spring
M31 End Cap SEMI AUTO, SPRING GUIDE SHORTENED.
M31 Spring Mount Forward Sear
M31 Small Parts Kit
M31 Trigger Bar
M31 Receiver Center Section semi auto
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