Welcome to POF-USA Patriot Ordnance Factory, Inc. featuring our P-415/P-416 Gas Piston Rifle Systems and Accessories. This site is dedicated to America's Law Enforcement and Military Personnel who are preserving freedom around the world.

Patriot Ordnance Factory, Inc. is an American owned and operated small business.  Our Manufacturing and R&D facilities are headquartered in Arizona.  We specialize in the design, manufacture and marketing of AR style rifles, uppers, lowers and miscellaneous gun accessories. 

We are dedicated to providing the highest quality parts and accessories for law enforcement, military and civilian sales at the lowest costs available.  Service and Support is our number one priority and concern.

Whether you are a Soldier, Federal Agent, Police Officer, Contractor, or an American Citizen we guarantee RELENTLESS RELIABILITY.

P.O.F-USA, INC. has engineered, manufactured and tested this system. We are extremely proud of the durability and performance of the P-415 / P-416 Gas-Piston uppers. We have eliminated features of the Gas Operating System such as gas-rings, gas tube, gas key. The P-415 / P-416 Gas-Piston system also eliminates Heat, Carbon build up and Gas Leaks which can have an adverse effect on the operating system. The biggest issue being "HEAT". A weapons first priority, must be "RELIABILITY".

We first displayed our gas piston uppers at the 2004 Shot Show. We have engineered the entire system using standard "AR15/M16" style parts such as the flat top receiver and bolt. We add only three additional parts to operate our gas piston uppers (Gas plug, Gas piston, and push rod). All uppers come standard with C.R.O.S ™ (Corrosion Resistant Operating System).

Frank DeSomma is the President and C.E.O. of POF-USA, Inc. Frank has 28 years experience in an industry most recognized for precision, quality, and reliability, the Aerospace Industry. His success in the manufacturing business is based upon his skill and experience in troubleshooting faulty equipment and design engineering. As a sport shooter and lifelong student of quality and precision, Frank decided to embark on a voyage to improve the traditional gas impingement design for the AR-style rifle. In just four short years, Frank has been able to inject his dedication for perfection into the main stream firearms industry.

Frank developed a working prototype from his garage in 2002, demonstrated his rifle at the 2004 Shot Show and sold his first rifle commercially in 2004.

POF-USA, Inc. currently has 5 patents on our design and several others pending, all of which directly address the issues with the current AR gas impingement design.