The Noveske N4 AR-15 Complete Upper Receiver 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 in order to attach or detach them. FeaturingM4 barrel extens...