The Stag Arms Stag 15 Tactical Nitride Upper delivers a complete AR-15 upper receiver assembly built around a 16-inch nitride-treated barrel and slim, free-floated M-LOK handguard. Chambered in 5.56 mm NATO with a 1:7 twist, it is designed to stabilize heavier bullets while the mid-length gas system and Type III hard coat anodized finish support smooth, durable operation. An A2 flash hider caps the threaded 1/2-28 muzzle, and the full-length Picatinny rail provides ample space for optics and accessories.

This upper is ideal for shooters looking to upgrade an existing mil-spec AR-15 lower for range use, training, or general-purpose duty where reliability and consistent accuracy matter. Its optic-ready design lets you tailor the sighting system to your preferences, while the government-profile barrel and slim 13.5-inch handguard keep the package balanced and controllable. Backed by Stag Arms’ reputation for well-built AR platforms, the Stag 15 Tactical Nitride Upper offers a refined, ready-to-run solution for modern AR enthusiasts.

• Manufacturer: Stag Arms
• Model: Stag 15 Tactical Nitride Upper
• Caliber: 5.56 Mm Nato / 223 Remington
• Action: Semi-Automatic
• Finish Color: Type Iii Hard Coat Anodized Black
• Barrel Length: 16"
• Threaded Barrel: 1/2-28 With A2 Flash Hider