AR-15 & AR-10 Lower Receiver Components

Build or rebuild any AR-15 or AR-10 lower receiver from individual components or a complete lower parts kit. Browse by part type below, or go to Lower Parts Kits for a bundled fire-control group, safety, catches, pins, and grip in one package.

Lower Parts

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Individual Parts or a Full LPK — What to Order

If you need a single component — a safety selector, bolt catch, or trigger guard — order it individually from the sub-categories below. If you're finishing a stripped or 80% lower from scratch, a lower parts kit is the more efficient route: it includes the full fire-control group, safety, magazine catch, bolt catch, pins, springs, and a pistol grip in one package. All parts here are designed for mil-spec AR-15 and DPMS-pattern AR-10 lower receivers.