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will this fit an m4 carbine ar15 — 1 Answer

by Mathew Muns, from TX, United States Asked on September 5, 2023

Name CMMG MK3 Receiver Extension and Stock Kit
As Low As $113.79 Save Up to 19%
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Answered by Ethan, Gear Expert, from IL, United States, on October 04, 2023

The CMMG, Inc MK3 Receiver Extension and Stock Kit is meant for the MK3 .308 platform of CMMG rifles. It uses a .308 carbine buffer and .308 spring. It will not be compatible with AR15 pattern rifles.

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