CMMG AR-15 Bolt Rehab Kit

The CMMG AR-15 Bolt Rehab Kit (SKU CA55AFF68) is a comprehensive component set designed to restore or upgrade the bolt carrier group assembly on AR-15 and M16 platform rifles. This kit contains all the critical wear items and springs that operators and gunsmiths routinely replace during maintenance cycles or when addressing extraction and ejection reliability issues in the field.

The kit includes a complete ejector assembly (ejector, ejector spring, and roll pin), extractor system (extractor, spring with buffer, pin, and O-ring), and three replacement gas rings. These components address the most common failure points in the bolt carrier group. The ejector spring and extractor spring inevitably weaken with round count, causing sluggish or incomplete ejection—a reliability hazard on duty or in combat. The gas rings seal the carrier against the bolt, preventing gas leakage that reduces cycling reliability. CMMG manufactures these parts to mil-spec tolerances, ensuring proper fit and function across standard AR platforms.

This kit serves law enforcement armorers, military gunsmiths, competitive shooters conducting scheduled maintenance, and tactical enthusiasts performing deep cleaning and carrier group service. Typical use cases include post-deployment inspections, addressing extraction malfunctions traced to worn springs, routine preventive maintenance on high-round-count rifles, and parts replacement when a carrier group fails function testing. The compact 0.04 lb weight reflects the precision nature of these small components, designed for precision fit rather than bulk.

AR-15 bolt carrier group maintenance is a core discipline among professionals who stake reliability on their firearms. Replacing springs and ejector components before they visibly fail prevents the kind of feed-or-fire malfunctions that compromise performance during qualification, deployment, or critical incident response. This CMMG bolt rehab kit consolidates the essential replacement items into a single purchase, eliminating the need to source components individually.

CMMG Inc. specializes in AR platform parts and complete rifles, with a reputation for mil-spec accuracy and duty-grade durability. This bolt rehab kit reflects that focus—straightforward, function-first component engineering for serious users.