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Are MP 15-22 magazines compatible with this or are the mp15-22 mags proprietary only to specific mp1522 product and cant be used with other 22lr ARs? — 1 Answer

by QA, from FM, United States Asked on May 9, 2022

Name CMMG, Inc 22LR Mk4 Upper Receiver Groups (5)
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Answered by Ethan, Gear Expert, from IL, United States, on June 24, 2022

This CMMG, Inc 22LR Mk4 Upper Receiver Group is compatible with CMMG .22 conversion magazines in a standard AR15 style lower receiver. It will not work with M&P-15 22 magazines.

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