Luth-AR LR-13A AR-15 Magazine Catch Assembly - Manganese Phosphate

The Luth-AR LR-13A is a factory AR-15 magazine catch assembly built for builders, rebuilders, and gunsmiths working on the AR-15 lower receiver. This drop-in assembly installs in place of the standard factory magazine catch to retain the detachable magazine and provide positive magazine release.

Machined from steel and finished in manganese phosphate for corrosion resistance and a uniform matte gray appearance, the LR-13A is dimensioned to the standard AR-15 / .223 / 5.56 lower pattern and fits the AR-15 platform. It is the correct replacement for worn or missing catches during a lower build, repair, or refinish, and pairs with a standard magazine catch button and spring.

As a dedicated lower-receiver part, the LR-13A is intended to be installed into a stripped or completed AR-15 lower; it is not a complete firearm and ships as a magazine catch assembly only. Add it to your parts bin alongside triggers, grips, and other Luth-AR lower components for a clean, consistent build.