Introducing the Noveske N4 AR-15 Complete Upper Receiver 338 ARC 8" Barrel 7" M-LOK Handguard. The upper is a precision machined billet receiver from 7075-T6 with extended feed ramps. The upper receiver and handguard is finished with Hardcoat type III anodizing, with Cerakote ceramic coating for the ultimate finish and performance. Additional features include a pinned low profile gas block, a flash hider, and a full-auto rated phosphate coated bolt carrier. This upper includes a Noveske GEN 4 NSR handguard with the M-Lok rail system with an outside diameter of only 1.48" (without accessories attached), it is one of the slimmest, lightest, customizable handguards available for the AR-15 platform. The NSR free floats the barrel for greater accuracy potential and provides a full length, continuous top rail for the addition of optics and/or accessories. M-Lok accessories are quick and easy to install along the handguard's length, and don't require that the NSR be removed from the upper ...