P OF-USA, a company that established a presence in the crowded AR manufacturing world by offering a piston-driven ... barrel features POF-USA’s E2 dual extraction system that involves four ...

Frank DeSomma, founder and president of Patriot Ordnance Factory (POF-USA), died on June 18 ... DeSomma developed the Regulated Short Stroke Gas Piston System in 2004, the first commercially ...

POF-USA is an Arizona-based small arms manufacturer known for its revolutionary concepts and radical approaches to engineering used to develop the finest piston driven AR-type rifles used by ...