Noveske 4th Gen N4 Stripped Upper Features The Noveske 4th Gen N4 Stripped Upper is machined from 7075-T6 aluminum billet stock giving it tighter tolerances and a more rigid platform than forged alternatives. Billet construction allows Noveske to hold closer dimensional consistency across the receiver which supports a tighter fit with the barrel nut and handguard system down the line. Extended feed ramps are incorporated directly into the receiver design to improve feeding reliability particularly when paired with suppressors or subsonic ammunition where cycling margins are tighter. A standard Mil-Spec 1913 Picatinny top rail featuring the Noveske Cross runs the length of the upper offering a continuous mounting surface for optics and accessories without interruption at the receiver junction. Type III hardcoat anodizing finishes the receiver in black providing excellent resistance to wear and corrosion over the life of the build even under hard use in the field or at the range. Because this upper is profiled specifically to match Noveske s 4th Generation handguards it includes an anti-rotation interface and uses N4 barrel nuts for a precise secure fit between receiver and handguard. This integration minimizes play between components and keeps the system rigid for better accuracy when a barrel and handguard are installed eliminating the wobble that can come from mismatched receiver and handguard interfaces. As a stripped receiver it accepts a wide range of barrels and components making it a versatile option for custom AR-15 builds in any caliber the platform supports. Builders looking for an authentic Noveske foundation to pair with Gen 4 handguards will find this upper purpose-built for that exact application with every detail of its geometry designed around that system rather than adapted to fit it. Pairing genuine Noveske upper and handguard components together ensures the build performs exactly as the manufacturer intended down to the barrel nut torque and rail alignment. Noveske 4th Gen N4 Stripped Upper Specifications Manufacturer: Noveske Model: 4th Gen N4 Stripped Upper Caliber: Multi-Cal Material: 7075-T6 Aluminum Color: Black Finish: Anodized Compatible Hosts: AR-15 Available At: GrabAGun