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CMMG AR15 Parts & Accessories

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We carry CMMG accessories, including conversion kits, AR barrels, complete uppers and other parts kits designed to work with a variety of barrels from 9mm to 5.56 and .22. Most models feature CMMG’s Weapon Armament Surface Protection (WASP), which consists of a salt bath nitride finish to improve resistance against abrasions, corrosion and general wear and tear when compared to hard chrome- or phosphate-lined parts. This process, otherwise known as nitriding, helps prevent buildup and keeps operation smooth and seamless.

Our entire selection of CMMG AR15 parts is on sale, so shop with us today and save on your next addition to your AR build.

Oct 13, 2026 Kevin

AR-15 .22LR Conversion: Drop-In Kit vs. Dedicated Upper

AR-15 .22LR Conversion Guide: Drop-In Kit vs. Dedicated .22 Upper Quick answer: An AR-15 .22LR con
Oct 8, 2026 Kevin

AR-15 BCG Guide: Coatings, HPT/MPI & How to Choose

AR-15 Bolt Carrier Group Guide: Coatings, Mil-Spec Features and How to Choose Quick answer: For
Oct 6, 2026 Kevin

AR-15 Build Kit Guide: Every Part You Need and the Best Kit for Your First Build

AR-15 Build Kit Guide: Every Part You Need and the Best Kit for Your First Build Quick answer:
Oct 1, 2026 Kevin

Lower Parts Kit vs. Lower Build Kit: What’s the Difference?

Lower Parts Kit vs. Lower Build Kit: What You Need to Build an AR-15 Lower Quick answer: A lowe