The Proof Research .300 PRC Stainless Drop-In Barrel for Barrett MRAD (brand part no. 133651) is a 26-inch bolt-action barrel built for shooters who need serious reach without sacrificing accuracy. Proof Research machines this stainless steel barrel to exacting tolerances and chambers it in .300 PRC, a magnum-class cartridge that holds velocity and energy well past 1,000 yards. A 1:9 twist rate stabilizes the heavy, high-BC bullets long-range and precision rifle shooters favor for this cartridge, and the 5/8-24 muzzle thread accepts a wide range of brakes and suppressors. Designed as a drop-in fit for the Barrett MRAD chassis system, it lets MRAD owners swap barrels and calibers without a trip to the gunsmith.

Key Specifications

• Chambered in .300 PRC, a magnum cartridge built for extended-range precision shooting.
• Measures 26 inches long, giving the cartridge room to reach full velocity.
• Cut with a 1:9 twist rate to stabilize heavy, high-BC .300 PRC match bullets.
• Threaded 5/8-24 at the muzzle for brakes, suppressors, and other muzzle devices.
• Machined from stainless steel for a stiff, accurate barrel that resists heat and wear.
• Built as a drop-in replacement for the Barrett MRAD bolt-action chassis system.

Frequently Asked Questions

What platform is this barrel designed for? It is a drop-in replacement barrel for the Barrett MRAD bolt-action chassis rifle.

What twist rate does it use? A 1:9 twist rate, matched to heavier .300 PRC projectiles used for long-range work.

What muzzle thread does it use? A 5/8-24 thread pattern, compatible with common .30-caliber brakes and suppressors.

Buy the Proof Research .300 PRC Stainless Drop-In Barrel

Order this Proof Research barrel from our rifle barrels selection and get your Barrett MRAD reaching further with less fuss. Order it from our Lubbock, Texas gun shop for fast, insured shipping.