The Noveske N4 Infidel Upper 5.56 13.7PW is a complete AR-15 upper receiver built around a 13.7-inch 416R stainless steel barrel with a pinned and welded muzzle device to achieve a 16-inch overall length. It features Noveske’s Gen 4 upper receiver, a full-auto bolt carrier group, and a 15-inch NSR free-floating M-LOK handguard with a continuous Picatinny top rail for mounting optics and accessories. The assembly is finished in black Cerakote and includes the Noveske Love Handle ambidextrous charging handle for smooth, reliable operation.

This upper is ideal for shooters who want a compact, balanced AR-15 setup without dealing with NFA short-barreled rifle requirements. The mid-length gas system with a pinned low-profile gas block promotes softer recoil and consistent cycling, making it well suited for range use, training, and practical competition. With its match chamber, extended feed ramps, and quality machining, the N4 Infidel Upper reflects Noveske’s reputation for precision, durability, and thoughtful design.

Key Features:

• Manufacturer: Noveske
• Model: N4 Infidel Upper 5.56 13.7PW
• Caliber: .223 Rem/5.56 NATO
• Barrel Length: 13.7" (Pinned And Welded To 16" OAL)
• Barrel Type: 416R Stainless Steel, Threaded 1/2x28
• Action: Semi-Automatic AR-15 Upper Receiver
• Handguard: 15" NSR Free-Floating M-LOK With Continuous Picatinny Top Rail
• Muzzle Device: Pinned And Welded Noveske KX3/Pig Pen Flash Suppressor
• Charging Handle: Noveske Love Handle Ambidextrous Charging Handle
• Gas System: Mid-Length With Pinned Low-Profile Gas Block
• Upper Receiver: Noveske Gen 4 Billet 7075-T6 Aluminum
• Finish Color: Black Cerakote