Alex Pro Firearms APF AR-15 Lower Parts Kit Trigger Disconnector Safety Selector

The Alex Pro Firearms APF AR-15 Lower Parts Kit delivers a complete, ready-to-build solution for AR-15 enthusiasts seeking reliable, drop-in components to complete a precision rifle build. Built around a full suite of critical internals, this kit includes essential items such as the trigger, hammer, disconnector, and their springs, along with the safety selector, bolt catch, and bolt catch springs, ensuring smooth operation and consistent trigger feel. The package also features a robust collection of pins, detents, and springs—including the front pivot pin, takedown detent and springs, rear takedown pins, mag catch assembly, and the trigger guard pivot spring pin—designed to streamline assembly and maintain reliable semi-automatic cycling. Completing the set are the disconnector, selector detent and spring, buffer detent and retainer spring, and the pistol grip, all chosen to support dependable control and ergonomics. Whether you're upgrading an existing build or assembling a fresh rifle from the ground up, the APF AR-15 Lower Parts Kit from Alex Pro Firearms provides the essential, high-quality components needed to achieve precise fit, reliable function, and lasting performance in the field or at the range.