Complete Flattop Upper With User-Configurable Handguard Rails
Flattop upper receiver features a customizable handguard to accommodate a variety of Picatinny rail placement configurations, and is outfitted with a selection of high-quality components – all ready to be placed on the mil-spec lower of your choice. Carbine-length, customizable YHM-9431 handguard accepts Yankee Hill’s bolt-on 3", 4", 6" and 7" rails in 8 different positions. Comes with a removable 3" elevated and 7" top-mounted Picatinny rail; additional rails sold separately. Receiver comes fully assembled with bolt/carrier, charging handle and integrated T-marked rail. Chambered in 5.56 NATO, the 16" barrel features a diamond-fluted pattern on the exterior for extra rigidity and cooling. Also includes a YHM-28-5C2 Phantom flash hider/compensator, YHM-9474-A forend cap, and a YHM-9394 flip-up front sight tower with gas block, bayonet lug and 1½" sling loop. Also includes a YHM-9680 windage-adjustable flip-up rear sight with A2-style long- and short-range apertures.
AR-15, Issue:09, Page:005
Big Book Catalog, Issue:66, Page:003
SPECS: Receiver – 7075 T6 aluminum alloy, mil-spec Type III hardcoat anodized, matte black. Fits mil-spec AR-15/M16 lower receiver with .250” pivot/takedown pins. Barrel – Chrome-moly vanadium steel alloy, heat treated to Rc 25-32, matte black; chrome-lined 16” (40.6cm) long. Chambered for 5.56 NATO. 1-7” twist. Handguard – 6061 T6 aluminum, hardcoat anodized, matte black. Sights – steel, Parkerized, matte black. 4.4 lbs (2kg) total wt.