• 7.25", 10.5", 14.5", 16.5", and 18" heavy contour hand-lapped button twisted rifled, fluted to reduce weight and heat.
• 4150 Mil-B-11595 chrome-moly-vanadium alloy (machine gun rated).
• 70 Rockwell case hardened (Nitride) heat-treated "5R" polygonal barrels are 2x harder than MIL-SPEC and hammer-forged barrels.
• Corrosion resistant, 10x thicker, and 10x harder than MIL-SPEC chrome lining.
• POF-USA .75" (7.25" brl) and 1.5" muzzle devices.
• 5.56x45 mm NATO (.223 Remington) chamber.
Method of Operation
• Gas Piston operated, rotating bolt (short stroke system).
• 3-position gas system for normal, suppressed, and bolt-action operating modes.
• C.R.O.S.™ (Corrosion Resistant Operating System) Nitride heat treated barrel, single-piece gas block, Nitride heat-treated gas plug, chromed gas piston, and NP3™ coated bolt carrier assembly (one-piece) all billet machined.
Bolt & Carrier
• Nickel plated steel bolt carrier, integral keyed, billet machined, heat treated/plated per MIL-SPEC.
• Roller cam pin with chrome plated stem and NP3™ coated roller.
• Chrome plated bolt, heat-treated to MIL-SPEC.
• POF-USA Modular Railed Receiver™ (M.R.R.™), free-floating handguard, monolithic top rail system, billet machined 7075-T6 aircraft aluminum alloy.
• 2-piece A3 flattop upper receiver.
• Oversized heat-sink barrel nut.
• Black Anodized charging handle.