Xtech Tacitcal XTT138LPK AR-15 Lower Parts Kit - Black

The Xtech Tacitcal XTT138LPK is a complete AR-15/M4 lower parts kit that takes a stripped lower receiver and turns it into a fully functional lower assembly. Built around enhanced polymer components, this LPK is engineered to mil-spec standards for precise fit and long-term reliability across duty, defense, and range builds.

At the heart of the kit is an Enhanced Polymer Trigger Guard with a generous, low-profile design that keeps the support hand clear of the trigger and accommodates gloved fingers, paired with a semi trigger and a textured ergonomic polymer pistol grip for positive control. All of the small hardware required to finish the lower is included: takedown and pivot pin assemblies, magazine catch assembly, safety selector assembly, buffer tube assembly, and the associated pins, springs, and detents.

Whether you are finishing a fresh build or refreshing an existing AR-15 or M4 lower, the XTT138LPK delivers every component needed to complete the lower in black polymer.