About this parts kit
A CMMG bolt catch for the Mk9 9mm AR-pattern platform. It locks the bolt open on an empty magazine and lets the shooter lock or release the bolt manually. This factory part is for Mk9 lowers.
Specifications
- Brand: CMMG
- Manufacturer Part #: 90CA572
- UPC: 810046231432
Buying from WBT Guns
- Delivery: Ships to your door anywhere in the United States, or pick it up free at our La Mesa store.
- Payment: Pay in full or finance with Credova.
- Questions: Fitment or compatibility questions? Call (619) 667-9453 or email sales@wbtguns.com. FAQ
WBT Guns is family-owned in La Mesa, California, and has served shooters since 2012.
A note on accuracy. Specifications, fitment and images come from the manufacturer and can contain errors or change without notice. If a detail matters to your purchase, call us and we will confirm it before you order. Any compliance notes are general information, not legal advice; California and local laws change, and the rules that apply depend on the firearm the part goes on.
