Wilson Combat TRLOWERKB15 AR-15 Billet Lower Receiver Small Parts Kit

The Wilson Combat TRLOWERKB15 is an AR-15 lower receiver small parts kit containing 20 precision components needed to complete a custom AR-15 build on a billet lower. This is the same kit Wilson Combat uses in its own shop when assembling custom AR-15 rifles, putting the company's well-known component quality directly in the hands of home builders and gunsmiths.

Purpose-built for billet AR-15 lower receivers, the kit includes a Wilson Combat bullet proof bolt release, bolt catch plunger, bolt catch threaded screw for billet receivers, bolt catch spring, trigger pin, hammer pin, safety selector detent, selector spring, trigger guard pin, takedown pin detent, and takedown pin spring, along with the remaining small parts required to finish a billet lower receiver assembly.

Listed as a universal caliber fit, the TRLOWERKB15 is intended for AR-15 platforms built on billet lowers across multiple chamberings. Every component is precision machined to tight tolerances for consistent fit and reliable function, letting builders skip the hassle of sourcing individual pins, springs, and detents one piece at a time.