CMMG MK9 Bolt Catch
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CMMG
Overview
The CMMG Mk9 Bolt Catch is a critical component designed to hold the bolt in the rearward position on your AR-15, facilitating easier magazine changes and ensuring reliable operation. Made from steel with a phosphate finish, it provides durability and resistance to wear, essential for maintaining performance under stress. This bolt catch is commonly found in builds that prioritize reliability and functional accuracy, particularly in competition and tactical applications.
Specifications
Price and stock
Availability is good for the CMMG MK9 Bolt Catch: it was in stock at one retailer or another nearly every day in September 2026, and today only Brownells has it in stock. Prices barely moved in September 2026, holding around $13.38, so there haven't been real sales lately. Buying today, the lowest price is $13.38 at Brownells, which matches the best price we saw in September.
Prices checked · refreshed daily across 37 retailers
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Read the guide: AR-15 Bolt Catch Guide →Frequently Built With
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