Proof Research Stainless Steel Barrel – .338 ARC | 16" PR15 Pistol | 1:8 Twist | .750 Gas Block | 144855

The Proof Research Stainless Steel Barrel chambered in .338 ARC is a premium, high-performance barrel designed for serious shooters and builders looking for exceptional accuracy and durability. This 16-inch PR15 barrel features a 1:8 twist rate and a .750 gas block journal, making it an excellent choice for AR-15 pistol builds chambered in the powerful .338 ARC cartridge. Manufactured with Proof Research’s renowned precision engineering, this stainless steel barrel delivers outstanding accuracy, consistent performance, and long service life.

Key Features of the Proof Research .338 ARC Barrel

• .338 ARC Chambering – Optimized for the .338 ARC cartridge, offering excellent ballistic performance in a compact 16-inch barrel length.
• 16" Barrel Length – Ideal length for AR-15 pistol builds, providing a balance of velocity, maneuverability, and overall length.
• Stainless Steel Construction – High-quality stainless steel provides superior corrosion resistance and long-term durability.
• 1:8 Twist Rate – Stabilizes a wide range of .338 ARC bullet weights for optimal accuracy and performance.
• .750 Gas Block Journal – Standard .750 diameter allows compatibility with most low-profile gas blocks and accessories.
• PR15 Profile – Designed specifically for the AR-15 platform with a profile suited for pistol-length gas systems.
• Precision Manufactured – Proof Research barrels are known for their exceptional straightness, consistent bore dimensions, and superior accuracy.

Why Choose the Proof Research .338 ARC Barrel?

The Proof Research Stainless Steel .338 ARC barrel stands out as a top-tier choice for builders seeking maximum performance from their AR-15 pistol. The .338 ARC cartridge has gained significant popularity for its ability to deliver heavy bullet weights with excellent terminal performance in a compact platform. Proof Research’s reputation for producing some of the most accurate production barrels available makes this an outstanding option for precision-oriented shooters. The stainless steel construction ensures the barrel maintains its integrity even after thousands of rounds, while the 1:8 twist rate provides excellent stabilization for a variety of bullet weights commonly used in .338 ARC. Whether you’re building a dedicated .338 ARC pistol for hunting, long-range plinking, or tactical applications, this barrel delivers the accuracy and reliability serious shooters demand. Its .750 gas block journal and pistol-length gas system compatibility make it easy to integrate into custom builds.

This barrel is an excellent choice for custom AR-15 pistol builds chambered in .338 ARC where accuracy and durability are priorities.

Specifications

• Manufacturer: Proof Research
• Model: PR15 Stainless Steel Barrel
• Model Number: 144855
• UPC: 843068144855
• Caliber: .338 ARC
• Barrel Length: 16"
• Twist Rate: 1:8
• Gas Block Journal: .750"
• Material: Stainless Steel
• Platform: AR-15 / PR15
• Gas System: Pistol Length

Ideal Applications for the Proof Research .338 ARC Barrel

This barrel is ideal for custom AR-15 pistol builds, precision shooting, and hunters looking for a compact, powerful .338 ARC platform with exceptional accuracy.

Experience the precision and quality of the Proof Research .338 ARC Stainless Steel Barrel. A high-performance barrel built for serious shooters and custom builds.The End ```