CMMG AR-15 Bolt Catch Parts Kit – Drop-In Lower Receiver Component

The CMMG AR-15 Bolt Catch Parts Kit provides a complete replacement assembly for worn or damaged bolt catch components in mil-spec AR-15 lower receivers. This kit includes the bolt catch lever, spring, and roll pin needed to restore or complete lower receiver builds. Whether you're replacing a worn factory part that's failing to lock back on empty magazines or finishing an 80% lower build, this kit delivers a functional, mil-spec-compliant component at a straightforward price point.

Manufactured from mil-spec materials with a phosphate finish for corrosion resistance, this bolt catch kit installs with basic armorer's tools—a roll pin punch set and hammer are required. The roll pin installation demands careful alignment to avoid cracking the lower receiver ears; builders unfamiliar with lower receiver assembly should consult installation guides or seek professional assistance. The bolt catch lever features the standard paddle design compatible with all AR-15 pattern rifles and carbines.

• Part Type: Bolt Catch Assembly Kit
• Compatible Firearms: AR-15, M4, and mil-spec lower receivers
• Material: Steel
• Finish: Phosphate
• Installation: Drop-in with basic armorer's tools (roll pin punch required)
• Includes: Bolt catch lever, spring, roll pin