The Noveske N4 SPR Upper 6ARC 18" Black is a complete upper receiver built for shooters who want precision-focused performance in a modern AR-15 platform. Centered around an 18" 416R stainless steel barrel with a 1:7 twist and rifle-length gas system, this upper delivers smooth cycling and consistent accuracy. The barrel is threaded 5/8x24 and ships with the Noveske Pig Pen suppressor-compatible flash hider, all housed under a lightweight 15" NSR M-LOK handguard with a continuous Picatinny top rail.

This configuration includes Noveske’s Gen 4 billet upper receiver, a full-auto bolt carrier group with DLC-coated Noveske bolt, and the ambidextrous Love Handle charging handle for easy manipulation from either side. Its 6mm ARC chambering makes it well suited for extended-range target shooting, practical competition, and hunting where flat trajectories and efficiency matter. Thoughtful engineering and clean execution showcase Noveske’s reputation for precision machining and refined AR components.

Key Features:

• Manufacturer: Noveske
• Model: N4 SPR Upper 6ARC 18" Black
• Caliber: 6mm ARC
• Barrel Length: 18"
• Threaded Barrel: 5/8x24 with Pig Pen flash hider
• Handguard: 15" NSR free-floating M-LOK with Picatinny top rail
• Upper Receiver: Gen 4 billet 7075-T6 aluminum
• Bolt Carrier Group: Full-auto with DLC-coated Noveske bolt
• Charging Handle: Noveske Love Handle ambidextrous