Ar-15 Upper Receiver Assemblies – Upper Receiver W/5.56 Cal Ft 16”” Ap4 Barrel Parkerized

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Complete ready-to-install semi-auto receivers let you change your AR-15 from a sporter to a match rifle or long-range varminter in just minutes—or add to a lower receiver to complete a parts gun. All barrels have six-groove 1-9″ right-hand twist rifling and M4-type feed ramp. Pre-ban style standard (Std) barrels are chambered for 5.56mm NATO with A2 flash suppressor military-style polymer handguard and A2 front sight housing that includes bayonet lug and riveted sling loop. AP4 adds to Std configuration the cutout for M204 grenade launcher mount to replicate the contours of the USGI M4 carbine barrel. Bull barrels are stainless steel post-ban style and chambered f Mfg: Dpms SPECS: Receiver – aluminum anodized and Teflon® coated black. A2 carry handle with adjustable rear sight or Flat Top (FT) rail. Barrel – Std – 4140 steel Parkerized finish dark gray. .725″ dia. at muzzle. AP4 – 4140 steel Parkerized finish dark gray. .725″ dia. at muzzle. Bull