Cross Armory Safe Mag Mil-Spec AR-15/M4 Black Aluminum Magazine Locking System

Cross Armory’s Safe Mag is a magazine locking system designed for AR-15/M4 firearms in jurisdictions requiring fixed magazines. When installed, it prevents magazine removal without disassembling the action. The system releases your magazine instantly upon separation of the upper and lower receivers—which disables the firearm action—without requiring a button press. Installation is straightforward, and the Safe Mag permits insertion of a new magazine when the upper and lower receivers are closed, without imposing stress on the firearm or the locking mechanism itself. This Mil-Spec model is compatible with AR-15/M4 firearms.