Upgrade your AR-15 build with the Green Mountain 350 Legend AR-15 Barrel 18″ Govt. Nitride, engineered for precision, durability, and reliable performance in straight-wall cartridge applications. This 18-inch government-profile barrel delivers the perfect balance of maneuverability and velocity for hunting, target shooting, and tactical use.
Key Features and Benefits
- Nitride Finish: The advanced nitride (Melonite) treatment provides superior corrosion resistance and reduced friction, extending barrel life while minimizing maintenance in harsh environments.
- Government Profile: The SOCOM-style contour offers optimal weight distribution for enhanced handling and sustained accuracy without excessive bulk.
- 1:16 Twist Rate: Stabilizes a wide range of 350 Legend projectiles, ensuring consistent accuracy and tight groupings at medium ranges.
- Rifle-Length Gas System: Promotes smooth cycling and reduced recoil, improving shooter comfort and follow-up shot speed.
- 1/2×28 Muzzle Threads: Compatible with a variety of muzzle devices for customization and recoil management.
Technical Specifications
- Barrel Length: 18 inches
- Cartridge: 350 Legend
- Platform: AR-15
- Gas Block Journal: 0.75 inches
- Finish: Nitride / Melonite
- Twist Rate: 1:16
- Muzzle Thread: 1/2×28
- Weight: 32 oz
Why Choose This Barrel
Designed specifically for the 350 Legend cartridge, this barrel excels in states requiring straight-wall ammunition for hunting. The combination of nitride hardening and precise rifling ensures reliable function and longevity, addressing common pain points like wear from high-volume shooting or environmental exposure. Its rifle gas system optimizes performance for an 18-inch length, delivering consistent velocity and accuracy.
Whether you’re building a dedicated hunting rifle or enhancing your tactical setup, this Green Mountain barrel provides the quality and precision serious shooters demand.

