CMMG AR-15 Lower Parts Kit – 5.56/.223, Without Grip or Fire Control Group

The CMMG AR-15 Lower Parts Kit provides all the small parts needed to complete a mil-spec AR-15 lower receiver, minus the pistol grip and fire control group. This configuration is ideal for builders who already own a preferred trigger assembly and grip, or want to select them separately. It includes the trigger guard, magazine catch assembly, bolt catch assembly, takedown pins, buffer retainer, and all springs and detents required for a functional lower.

All components are manufactured to mil-spec dimensions with a phosphate finish for corrosion resistance. Installation requires basic armorer tools and familiarity with AR-15 assembly—a punch set, hammer, and detent installation tool are recommended. This is a drop-in kit for anyone comfortable with standard lower receiver assembly.

• Part Type: Lower Parts Kit (Partial)
• Compatible Firearms: AR-15, 5.56/.223 platforms with mil-spec lower receivers
• Included Components: Trigger guard, magazine catch assembly, bolt catch assembly, takedown pins, pivot pin, buffer retainer and spring, safety selector detent and spring (no grip, no fire control group)
• Finish: Phosphate
• Installation: Drop-in for experienced builders; basic armorer tools required