Noveske N4 Diplomat Complete Upper Features The Noveske N4 Diplomat Complete Upper is built around a 7.94 inch 416R stainless steel barrel paired with a 1 to 7 inch twist rate a combination suited to the wide range of bullet weights commonly run in .300 AAC Blackout from lightweight supersonic loads to heavy subsonic rounds. A hand polished Noveske Match Chamber and extended hand polished feed ramps are designed to improve feeding reliability and contribute to tighter accuracy. The pinned low profile gas block runs on a pistol length gas system a configuration chosen specifically to work well with the short barrel length. The Noveske Pig Pen muzzle device is built with suppressor mounting spacing in mind making it easy to add a suppressor without extra components. This upper uses a 4th generation billet 7075-T6 aluminum receiver finished in Armor Black Cerakote a coating chosen for its hardness and corrosion resistance. A 7 inch NSR free floating M-LOK handguard rides over the barrel with a continuous Picatinny top rail for mounting optics or other accessories. An ambidextrous charging handle and a full auto bolt carrier group round out the build giving the upper broad compatibility with common AR-15 lower receivers. This upper suits shooters building a compact suppressor ready .300 AAC Blackout rifle or pistol who want a proven professionally finished upper assembly. Noveske N4 Diplomat Complete Upper Specifications Manufacturer: Noveske Model: N4 Diplomat Complete Upper Type: Complete Upper Receiver Caliber: .300 AAC Blackout Barrel Length: 7.94 Barrel Material: 416R Stainless Steel Twist Rate: 1:7 Thread Pitch: 5/8x24 Gas System: Pistol Length Muzzle Device: Pig Pen Suppressor Compatible Handguard: 7 M-LOK with Picatinny Top Rail Finish: Cerakote Color: Black Charging Handle: Ambidextrous Love Handle Available At: GrabAGun