CMMG AR-15 MK3 Buffer Assembly
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CMMG
Overview
The CMMG AR-15 MK3 Buffer Assembly is a complete parts kit designed for builders looking to ensure reliable function and performance in their AR-15 builds. This assembly features a Mil-Spec buffer tube, which is compatible with a wide range of stocks and provides the necessary support for smooth operation, while the carbine buffer tube type is tailored for builds that prioritize compactness and maneuverability. You'll commonly find this buffer assembly in tactical and versatile builds where a standard carbine setup is preferred.
Specifications
Build history on GunPartPicker
Builders on GunPartPicker first added the CMMG AR-15 MK3 Buffer Assembly to a build in March 2026.
It was out of stock everywhere we track for all of August 2026, and today only CMMG has it in stock. Buying today, the lowest price is $124.95 at CMMG, above August's low of $43.99, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
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Builds Featuring This Part
See all 1 →Builds in the community that include the Cmmg Ar-15 Mk3 Buffer Assembly
| Build | Parts | Total |
|---|---|---|
 | 22 | $1295.29 |
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