The Barrett Firearms MRAD Barrel Conversion Kit in .300 PRC (brand part number 18431) lets an existing MRAD owner add a second caliber to their rifle without buying a whole new gun. The kit includes a 26-inch fluted stainless steel barrel threaded 5/8×24 with a Barrett muzzle brake, a matching bolt head, a 10-round magazine, and a ZCORR anti-corrosion storage bag, all packed in a Barrett-branded bag. Note that earlier-production MRADs may require an additional large-breech-to-small-breech conversion kit to complete the caliber swap.

Key Specifications

• Converts an existing Barrett MRAD to fire .300 PRC, a modern long-range magnum cartridge.
• Barrel length measures 26 inches, giving .300 PRC loads room to reach their full velocity potential.
• Barrel is stainless steel with a fluted profile, reducing weight while aiding heat dissipation.
• Rate of twist is 1:8, matched to heavier .300 PRC bullet weights for long-range stability.
• Muzzle is threaded 5/8×24, a standard long-range thread pattern.
• Kit includes the matching Barrett muzzle brake, tuned for this barrel and caliber.
• Magazine capacity is rated for 10 rounds, included as part of the conversion kit.
• Kit includes a matching bolt head, sized for the .300 PRC case head.
• Kit includes a ZCORR anti-corrosion storage bag in Barrett branded packaging.

Frequently Asked Questions

Does this kit include everything needed to convert my MRAD? It includes the barrel, matching bolt head, magazine, muzzle brake, and a ZCORR storage bag; earlier-production MRADs may also require a separate large-breech-to-small-breech conversion kit, so confirm your rifle’s breech size first.

Do I need gunsmithing to install this kit? No, the Barrett MRAD platform is built around a user-serviceable, tool-assisted barrel and caliber conversion system.

What magazine does this kit use? It includes a 10-round magazine matched to the .300 PRC conversion.

Buy the Barrett MRAD .300 PRC Barrel Conversion Kit

Order this Barrett MRAD .300 PRC barrel conversion kit from a Lubbock, Texas gun shop and add a long-range magnum caliber to your MRAD. Browse more calibers and barrels in our rifle barrels selection.