POF-USA

POF-USA ranked #82 of 323 brands on GunPartPicker in September 2026, just behind Superlative Arms, with about 1 in every 500 parts builders added. Up from #86 in August. Builders reached for POF-USA mostly for upper receiver parts. The most added single part was the POF USA P415 Edge Upper Receiver Assembly 5.56x45mm NATO 16.5in Barrel 14.5in M-LOK Rail Cerakote Burnt Bronze, taking the top spot from the Patriot Ordnance Factory Renegade Plus 10.5" Complete Upper .300 AAC Blackout 1:7, Black - 1446.

Upper receivers were the busiest POF-USA category in September: 9 products came back in stock, several more than once. About 55% of the 204 POF-USA products we track are in stock today.

Also popular this month: Patriot Ordnance Factory DROP IN TRIG 4lb Single Stage EFP, Patriot Ordnance Factory Minuteman 16.5" Complete Upper 5.56x45mm 1:8, Black - 1652, POF USA Renegade Plus Upper Receiver Assembly 5.56mm 16.5in Barrel M-LOK Rail Burnt Bronze and Patriot Ordnance Factory Rogue Complete Upper OD Green .308 Win 16.5 Barrel.

Why POF-USA

POF-USA was started in a Phoenix garage in 2002 by Frank DeSomma, an aerospace process engineer. Its 2004 P416 was the first short stroke gas piston AR-15 sold commercially.

The piston is the whole reason to buy one. A regulated short stroke system pushes an op rod into the carrier instead of dumping gas into the upper, so the action runs cleaner and cooler, and the gas plug lets you tune it for short barrels or a can.

POF builds a lot around that: NP3 coated parts, nitrided barrels and gas blocks, a roller cam pin and an oversized heat sink barrel nut. The Revolution, a compact .308, weighs 7 lbs 4 oz.

POF uppers hold about 2% of the upper slot on GunPartPicker. The median paid runs about $820 against roughly $400 for the typical upper.

You pay twice the price, and a piston upper uses its own carrier and op rod, so you can't swap in any direct impingement bolt carrier. We'd buy one for a short barrel or suppressed gun, and skip it for a basic 16 inch carbine.