Franklin Armory's Salus lower comes assembled around the BFSIII Elite binary trigger, the system that made the company's name. In binary mode the trigger fires on both pull and release, which dramatically increases practical rate of fire while remaining semi-automatic; a three-position selector lets you switch back to standard semi-auto at any time.

This black-finished complete lower is configured with an SBM4 brace and drops onto any mil-spec AR-15 upper. Binary triggers are restricted in some states, so confirm your local law before ordering.

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