The American Tactical Milsport complete lower gives your AR-15 build a finished foundation: a mil-spec-pattern lower receiver assembled with fire control group, buffer system, and stock, ready to pair with the complete upper of your choice. Building from a complete lower is the easiest path into the AR world — no small-parts installation, no detent springs across the room — and ATI's Milsport line keeps the cost of entry low. Because the serialized lower is the legally regulated part, one transfer covers it, and every upper you own afterward pins on in seconds. A practical starting point for first builds and spare-rifle projects alike.

This firearm ships to your chosen FFL dealer for transfer. Order online from Dawson Defense, an Arizona-owned licensed dealer and importer.