If you're looking for an AR that's a cut above, check out the R415.
Specifications and Features:
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 8620, integral keyed, steel bolt carrier (billet machined), heat treated/plated per MIL-SPEC.
Roller cam pin, NP3 coated.
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.