The POF-USA P-415 EDGE Upper (brand part no. 01309) is a 16.5-inch, 5.56x45mm NATO gas-piston upper built around POF-USA’s patented E2 Dual-Extraction Technology, which cuts four small channels into the chamber walls to let gas pressure help push the spent case rearward, reducing wear on the extractor and improving overall reliability. The upper runs a 5-position adjustable gas piston system, using a gas plug, piston, and operating rod to cycle the action instead of venting gas directly into the receiver like a direct-impingement design. An ambidextrous charging handle and POF-USA’s Modular Railed Receiver, a free-floating monolithic handguard with a reinforced backbone, round out a build forged from 7075-T6 aluminum and machined to mil-spec M4 feed ramps. The 4150 CrMoV steel barrel is finished in Black Nitride, cut with 5R rifling and a 1-in-8 twist, and threaded 1/2×28 at the muzzle. At 16.5 inches, this upper clears the federal minimum rifle barrel length with room to spare, so it’s a straightforward addition to any standard AR-15 rifle build.

Key Specifications

• Chambered in 5.56x45mm NATO.
• Barrel measures 16.5 inches.
• Rifling uses a 1-in-8 twist with 5R rifling.
• Barrel is 4150 CrMoV steel, finished in Black Nitride.
• Runs POF-USA’s E2 Dual-Extraction Technology for reduced extractor wear.
• Features a 5-position adjustable gas piston system.
• Includes an ambidextrous charging handle.
• Built with POF-USA’s Modular Railed Receiver free-floating handguard.
• Upper receiver forged from 7075-T6 aluminum to mil-spec M4 feed ramps.
• Ships optic-ready.

Frequently Asked Questions

What does the E2 Dual-Extraction system do? It cuts small channels into the chamber walls so gas pressure helps push the spent case out, reducing the workload and wear on the extractor.

Is a gas piston upper different to maintain than direct impingement? Yes, a piston system keeps combustion gases out of the receiver, generally running cleaner between cleanings than a direct-impingement design.

Does this upper include a bolt carrier group? It’s sold as a complete gas-piston upper assembly; confirm bolt carrier group compatibility with your specific piston system when ordering.

Buy the POF-USA P-415 EDGE Upper, 5.56 NATO, 16.5-inch, Black

Add a gas-piston EDGE upper to your next full-length AR-15 build. Order it through our Patriot Ordnance Factory lineup of AR15 uppers from our Lubbock, Texas gun shop.