CMMG AR-15 Lower Parts Kit – Pins & Springs

The CMMG AR-15 Lower Pins & Springs Kit provides essential replacement parts for completing or repairing your AR-15 lower receiver. This kit includes the small pins and springs that are frequently lost during disassembly or wear out over time—critical components for trigger function, magazine retention, and selector operation. Whether you're finishing a build, performing maintenance, or keeping spares on hand, this kit ensures you have the factory-spec parts needed to keep your rifle operational.

All components are manufactured to mil-spec dimensions with durable steel construction and proper spring tension. Installation is straightforward for anyone familiar with AR-15 assembly, though a punch set and patience are recommended for driving pins without marring the receiver. This is a drop-in solution that requires no fitting or gunsmithing.

• Part Type: Lower Receiver Pins & Springs Kit
• Compatible Firearms: AR-15 pattern rifles
• Material: Steel pins, music wire springs
• Finish: Black oxide
• Installation: Drop-in (basic tools required)
• Includes: Pivot pin, takedown pin, bolt catch pin, trigger guard pin, selector detent, selector spring, bolt catch spring, trigger guard spring, and other standard lower receiver small parts