The Noveske N4 OG Upper 6ARC 12.5 Blk is a complete upper receiver built around a 12.5 inch 416R stainless steel barrel, optimized for the efficient 6mm ARC cartridge. A mid-length gas system, pinned low-profile gas block, and Noveske Pig Pen suppressor-compatible muzzle device work together to deliver smooth cycling and consistent accuracy, while the 4th generation billet 7075-T6 receiver and NSR-10.75 M-LOK handguard keep the package rigid yet lightweight.

This upper is ready to drop onto a standard AR-15 lower for a precise, soft-shooting setup ideal for extended range sessions, practical competition, or hunting where compact handling matters. The Love Handle ambidextrous charging handle and full-auto rated bolt carrier group with DLC coated Noveske bolt support reliable function with modern 6mm ARC loads. It is a refined example of Noveske’s focus on precision machining, thoughtful design, and long-term durability.

Key Features:

• Manufacturer: Noveske
• Model: N4 OG Complete Upper
• Caliber: 6mm ARC
• Barrel Length: 12.5 Inches
• Barrel Material: 416R Stainless Steel
• Gas System: Mid-Length
• Handguard: 10.75 Inch NSR Free-Floating M-LOK With Picatinny Top Rail
• Muzzle Device: Noveske Pig Pen Suppressor-Compatible
• Charging Handle: Love Handle Ambidextrous Charging Handle
• Bolt Carrier Group: Full-Auto Compatible With DLC Coated Noveske Bolt