Partial AR M4 Lower Parts Kit Gunbuilder CMMG 55CA601

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