CMMG PARTS KIT AR15 UPPER PINS/SPRNG

Description

Building or repairing an AR-15 upper means keeping a handful of small parts on hand that are easy to lose and hard to source individually at the last minute. This kit from CMMG addresses that directly, packaging together the pins and springs that live in the upper assembly so you have what you need whether one piece went missing during a range session or you are assembling a complete upper from scratch.

The kit covers the front sight detent and its spring, the forward assist spring, an extractor spring paired with its buffer, an extractor pin, an ejector with its spring, and the ejector roll pin. These are the components that govern reliable extraction and ejection, keep the forward assist functioning correctly, and maintain front sight adjustment — all areas where a worn or missing part translates directly into malfunctions or lost zero. Having spares on the shelf means a stripped extractor spring or a dropped ejector pin does not end a build day.

All parts are manufactured to meet or exceed mil-spec, so they fit and function in standard AR-15 and M4-profile uppers without modification. For anyone maintaining multiple rifles, running a training program, or simply stocking a parts drawer against future need, this kit provides the upper-specific hardware in one place at a straightforward price.