Noveske
Precision-machined 7075-T6 billet N4 receiver with extended feed ramps and a Noveske handguard anti-rotation interface.

Noveske machines its 4th Generation N4 upper from 7075-T6 billet with extended feed ramps, a MIL-STD-1913 top rail, and Type III hardcoat anodizing. The receiver profile is designed to match Noveske 4th Generation handguards and includes the corresponding anti-rotation interface.
The product uses N4 barrel-nut threads measuring 1 7/16 by 18 TPI.
Add the Noveske 4th Generation N4 Upper Receiver to your build and see how it enhances your platform.