Noveske N4 SPR, Complete Upper Receiver, 6MM ARC, 18" Stainless Steel Barrel, 5/8X24 Thread Pitch, Fits AR-15, Cerakote Finish, Black, 15" M-LOK Handguard, Black Love Handle Charging Handle, Pig Pen Flash Hider

The Noveske N4 SPR 18" Upper is chambered in 6mm ARC and features an 18" 416R stainless-steel barrel with a 1:7 twist, 3-land-and-groove rifling, and a rifle-length gas system. The barrel includes a hand-polished Noveske Match Chamber, extended hand-polished feed ramps, a pinned low-profile gas block, and 5/8"-24 threads with a Noveske Pig Pen suppressor-compatible muzzle device. It is paired with a 4th-generation billet 7075-T6 aluminum receiver, Noveske Love Handle ambidextrous charging handle, and a 15" NSR free-floating M-LOK handguard with a continuous Picatinny top rail. • 18, 6mm ARC, 416R, 1:7 Twist;Rifle-Length Gas Tube with Pinned Gas Block;Noveske Pig Pen Suppressor-Compatible Muzzle Device;Noveske Gen 4 Upper Receiver;Ambidextrous Charging Handle;Full-Auto Bolt Carrier Group;DLC Coated Noveske Bolt;M-LOK Handguard with Continuous Picatinny Top Rail