Noveske N4 OG Complete Upper Features The Noveske N4 OG Complete Upper is built around a hand-polished Noveske match chamber and extended hand-polished feed ramps that improve feeding reliability across a range of 5.56mm ammunition. The 12.5 inch 416R stainless steel barrel uses a 1-7 twist rate suited to heavier longer bullets and a mid-length gas system with a pinned low-profile gas block for consistent cycling. A Noveske Pig Pen suppressor-compatible muzzle device is threaded directly onto the 1/2x28 muzzle allowing shooters to add a suppressor without further gunsmithing. The 4th generation precision-machined 7075-T6 billet carry-handle receiver gives this upper a distinctive retro profile while retaining modern manufacturing tolerances. An ambidextrous Noveske Love Handle charging handle makes manipulation equally easy for left and right-handed shooters and the full-auto rated bolt carrier group is built to handle sustained use. The 10.75 inch NSR free-floating M-LOK handguard includes a continuous Picatinny top rail for mounting optics or accessories alongside the fixed carry handle. Sighting is handled by an A2 rear sight with adjustable windage and elevation paired with a Scalarworks Peak front iron sight giving shooters a proven durable backup sight system. Finished in Armor Black Cerakote and built to drop onto any mil-spec AR-15 lower this upper is a strong choice for shooters assembling a retro-correct or carry-handle configured rifle. Noveske N4 OG Complete Upper Specifications Manufacturer: Noveske Model: N4 OG Complete Upper Type: Complete Upper Receiver Caliber: 5.56 NATO Barrel Length: 12.5 Type of Barrel: Threaded Thread Pattern: 1/2x28 Twist Rate: 1:7 Finish: Cerakote Color: Black Compatible Hosts: AR-15 Sights: A2 Rear Scalarworks Peak Front Charging Handle: Noveske Love Handle Ambidextrous Handguard: 10.75 M-LOK Muzzle Device: Pig Pen Flash Hider Available At: GrabAGun