Gunbuilder AR M4 Lower Parts Kit CMMG No. 55CA601
High quality CMMG AR-15 / M4 lower receiver partial parts kit. These include everything EXCEPT the pistol grip, trigger guard, and the trigger / hammer assembly. Ideal for the builder who wants to source their own grip and trigger assembly.
- Bolt catch/roll pin
- Bolt catch plunger/spring
- Trigger/hammer retaining pins
- Safety, detent, & spring
- Magazine catch, spring, & release button
- Pivot/takedown pins, detents, & springs
- Buffer retainer/spring
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