The CMMG AR15 Gunbuilder's Kit (55CA601) is a specialized Lower Parts Kit (LPK) designed for builders who want to customize their rifle’s ergonomics and performance from the start.
Unlike a standard LPK, this kit excludes the fire control group (trigger and hammer) and the pistol grip, assuming you will be purchasing high-end aftermarket versions of those components.
What’s Included
This kit contains all the high-quality "mil-spec" small parts required to complete an AR-15 lower receiver:
- Take-down & Pivot Pins: Including the necessary detents and springs.
- Bolt Catch Assembly: Bolt catch, plunger, spring, and roll pin.
- Magazine Catch Assembly: Magazine catch, spring, and button.
- Safety Selector: Standard semi-auto selector, detent, and spring.
- Buffer Retainer: Pin and spring.
- Trigger Guard: Standard polymer guard with roll pin.
Why Choose This Kit?
- Cost Efficiency: You aren't paying for a "parts bin" trigger or a basic A2 grip that you’ll likely replace immediately.
- CMMG Quality: CMMG is well-regarded for having excellent quality control on small parts, meaning fewer "out-of-spec" headaches during the build.
- Organized Packaging: Parts are usually color-coded or separated in bags to make identification easier for first-time builders.
**All parts meet or exceed mil-spec**
