Proof Research Carbon Fiber PR15 Barrel – 338 ARC | 12" Pistol | .750 Gas Block | 1-8 Twist | 144794

The Proof Research Carbon Fiber PR15 Barrel is a premium, lightweight barrel designed for high-performance AR-15 pistol builds. Chambered in the powerful 338 ARC cartridge, this 12-inch barrel delivers exceptional ballistic performance in a compact package. Featuring Proof Research’s advanced carbon fiber wrapping technology, this barrel significantly reduces weight while maintaining the rigidity and thermal stability required for accurate shooting. With a .750" gas block journal and a 1-8 twist rate, this barrel is optimized for the 338 ARC and is an excellent choice for shooters looking to build a lightweight, hard-hitting pistol platform.

Key Features of the Proof Research 338 ARC Carbon Fiber Barrel

• Carbon Fiber Construction – Advanced carbon fiber wrapping reduces overall weight while increasing stiffness and heat dissipation.
• 338 ARC Chambering – Delivers impressive terminal performance and long-range capability in a compact AR-15 platform.
• 12" Pistol Length – Compact barrel length ideal for AR pistols, SBRs, and maneuverable builds.
• .750" Gas Block Journal – Standard diameter allows compatibility with most low-profile and adjustable gas blocks.
• 1-8 Twist Rate – Optimized twist for stabilizing 338 ARC projectiles for maximum accuracy and performance.
• PR15 Platform – Designed specifically for AR-15 style receivers and pistol builds.
• Lightweight Design – Dramatically lighter than traditional steel barrels without sacrificing strength or accuracy.

Why Choose the Proof Research 338 ARC Carbon Fiber Barrel?

The Proof Research Carbon Fiber PR15 Barrel offers an outstanding combination of reduced weight, superior accuracy, and high performance. The 338 ARC cartridge has gained popularity for its ability to deliver heavy bullet weights with excellent terminal ballistics in the AR-15 platform. Proof Research’s carbon fiber technology takes this performance even further by dramatically cutting weight while maintaining the barrel’s structural integrity and thermal characteristics. This makes the barrel ideal for pistol builds where weight savings are critical. The 1-8 twist rate is perfectly matched to the 338 ARC, ensuring optimal stabilization of a wide range of bullet weights. Whether you’re building a compact home defense pistol, a lightweight truck gun, or a high-performance short-range precision pistol, this Proof Research barrel provides the accuracy, durability, and weight savings serious shooters demand.

This barrel is an excellent choice for AR-15 pistol builds, SBRs, and compact tactical platforms.

Specifications

• Manufacturer: Proof Research
• Model: Carbon Fiber PR15 Barrel
• Model Number: 144794
• UPC: 843068144794
• Caliber: 338 ARC
• Barrel Length: 12"
• Gas Block Journal: .750"
• Twist Rate: 1-8
• Configuration: Pistol
• Material: Carbon Fiber Wrapped Steel

Ideal Applications for the Proof Research 338 ARC Barrel

This barrel is ideal for AR-15 pistol builds, short-barreled rifles, home defense, and compact tactical applications.

Experience premium lightweight performance with the Proof Research Carbon Fiber Barrel. A 12" 338 ARC barrel designed for PR15 pistol platforms.The End ```