Discover the precision and reliability of the Green Mountain 5.45×39 AK-47 Barrel, a premium component designed for enthusiasts building or upgrading AK platforms chambered in the popular 5.45x39mm cartridge. This 16.33-inch barrel delivers exceptional accuracy and durability, making it an ideal choice for tactical, sporting, or custom firearm projects.
Key Features
- Phosphate finish with chrome-lined bore – Provides superior corrosion resistance and extended barrel life under demanding conditions.
- Government / SOCOM profile – Offers a balanced contour that optimizes weight distribution without sacrificing strength or heat dissipation.
- 1:8 twist rate – Stabilizes a wide range of 5.45x39mm projectiles for consistent, tight groupings at extended ranges.
- 14×1 LH muzzle threads – Compatible with standard AK-74 style muzzle devices and suppressors for versatile customization.
- 4150 chrome moly steel construction – Ensures rugged performance and longevity in high-volume shooting scenarios.
Technical Specifications
- Barrel Length: 16.325 inches
- Overall Length: 16.33 inches
- Weight: 22.4 oz
- Cartridge Compatibility: 5.45x39mm
- Platform: AK-47 / AK-74 hybrid builds
- Finish: Phosphate exterior + Chrome-lined bore
- Barrel Profile: Government / SOCOM
- Twist Rate: 1:8
- Muzzle Thread Pattern: 14×1 LH
Why Choose This Green Mountain Barrel
Whether you’re restoring a classic AK-74 or building a modern tactical rifle, this barrel addresses common pain points like premature wear, inconsistent accuracy, and difficult customization. The chrome-lined bore resists fouling and erosion from corrosive ammunition, while the phosphate finish protects against rust in varied environments. Its precise manufacturing tolerances ensure seamless integration with standard AK trunnions and gas systems, reducing the need for extensive gunsmithing.
Shooters benefit from enhanced reliability during rapid fire and improved muzzle velocity consistency, translating to better terminal performance on target. This barrel’s thoughtful design supports both recreational plinking and serious defensive applications without compromising on quality or safety.
Elevate your next AK build with the Green Mountain 5.45×39 barrel – engineered for performance that lasts.

