Ruger | AR Lower Parts Kit

Ruger's AR‑556 lower parts kits give you every internal component needed to complete a stripped AR‑15 lower to Ruger's own factory spec, saving the trouble of sourcing trigger group, pins, springs, and detents individually from a dozen different vendors. Configurations range from a basic parts‑only kit to versions bundling a pistol grip, letting you match the kit to exactly how much of the build you want handled in one purchase. A straightforward way to finish a stripped lower with parts built to the same standard as a complete factory Ruger AR.