The Cross Armory AR Fixed Mag Lock in Black (Cross Armory part no. CRFM) is a compliance device built to convert an AR-15 or AR-10 to a fixed-magazine configuration where required by local law. Made by Cross Armory, this mag lock installs at the magazine release and requires a tool to remove the magazine, satisfying fixed-magazine requirements in restrictive jurisdictions while keeping the rifle otherwise fully functional. It is a straightforward part for builders who need to stay compliant without giving up an AR-pattern platform entirely.

Key Specifications

• Compatible with both AR-15 and AR-10 platforms.
• Finished in black.
• Functions as a fixed-magazine compliance device.
• Requires a tool to release the magazine once installed.

Frequently Asked Questions

What platforms does this fit? AR-15 and AR-10.

What is a fixed mag lock used for? Converting a rifle to a fixed-magazine configuration to satisfy restrictive local compliance requirements.

Does the rifle still function normally otherwise? Yes, only magazine release is affected, requiring a tool to remove the magazine.

Buy the Cross Armory AR Fixed Mag Lock

Add this mag lock from our AR15 accessories and parts lineup for compliance builds. Order today for fast, insured shipping from our Lubbock, Texas gun shop.