Description
20″ 6mm ARC 4150 Rifle Medium 1:7.5 Twist Nitride Barrel
Stretch your shots. Stay light. Shoot true.
The 20″ 6mm ARC Rifle Barrel is designed for shooters pushing their AR-15 platform well past traditional 5.56 capabilities. Made from 4150 Chrome Moly Vanadium steel and treated with a durable nitride finish, this barrel delivers outstanding heat resistance, corrosion protection, and smooth operation over extended use.
Optimized for long-range precision, the 1:7.5 twist rate is ideal for stabilizing heavy 6mm ARC projectiles (80–108 gr), making it a top choice for PRS, hunting, or DMR builds. The rifle-length gas system ensures smoother recoil and more consistent cycling, while the medium profile balances stiffness and weight for repeatable accuracy. Threaded 5/8×24, it’s suppressor-ready right out of the box.
Features
4150 CrMoV Steel – Built for strength, heat tolerance, and longevity
Black Nitride Finish – Corrosion-resistant and low-maintenance
1:7.5 Twist Rate – Ideal for heavy, high-BC 6mm ARC bullets
Rifle-Length Gas System – Smooth cycling and reduced recoil
Medium Contour – Balanced for precision and manageable weight
5/8×24 Threaded Muzzle – Suppressor and brake compatible
Specifications
Caliber: 6mm ARC
Barrel Length: 20″
Twist Rate: 1:7.5 RH
Gas System: Rifle Length
Gas Block Journal: 0.750″
Muzzle Thread: 5/8×24
Profile: Medium
Finish: Nitride / Melonite
Platform: AR-15
Weight: 26 oz
Origin: Made in the USA
SKU: 28364
