Retro Series M4 Carbine 16" Complete Upper Assembly 5.56x45mm NATO
The DD’s Ranch Retro Series 5.56 NATO upper blends vintage-inspired looks with contemporary engineering. At its heart is a 16-inch cold hammer-forged barrel treated with a Melonite finish for exceptional surface hardness, corrosion resistance, and extended service life. The carbine-length gas system delivers reliable cycling with standard 5.56 NATO loads, while the 1:8 twist rate stabilizes everything from light 55-grainers to heavier 77-gr match or hunting bullets. Built to mil-spec dimensions and function-checked at the factory, this upper drops onto any standard AR-15 lower to create a dependable, versatile rifle with a timeless aesthetic. Includes a F marked front sight post, any standard detachable carry handle or rear flip-up sight is compatible.
