The CMMG AR-15 Zeroed Lower Parts Kit Gunbuilder's Kit is built for shooters who want a clean, reliable foundation for their AR-15 or Mk4 lower. This kit focuses on the core controls and hardware, leaving out commonly upgraded items like the trigger guard, fire control group, and pistol grip so you can choose your own favorites. All components meet or exceed mil-spec and arrive organized for straightforward installation.

Ideal for new builds or refreshing a well-used lower, this kit provides the essential pins, springs, and ambidextrous controls needed for dependable operation. Whether you are assembling a dedicated range rifle, a competition carbine, or a training-focused AR-15, the Zeroed Gunbuilder's Kit helps ensure smooth function and consistent feel. CMMG’s attention to detail and proven manufacturing quality make this kit a solid choice for serious builders.

Key Features:

• Manufacturer: CMMG
• Model: AR-15 Zeroed Lower Parts Kit Gunbuilder's Kit
• Gun Make: AR Platform
• Gun Model: AR-15
• Condition: New
• Includes: Bolt Catch Plunger, Springs, Roll Pins, Trigger/Hammer Retaining Pins, Adjustable Ambi Safety, Ambi Magazine Catch, Magazine Release Button, Pivot/Takedown Pins, Buffer Retainer & Spring