The Barrett MRAD .308 Winchester conversion kit gives you a straightforward way to reconfigure your modular rifle platform for one of the most versatile hunting and long-range shooting cartridges available. This kit includes everything needed for the conversion: a 17-inch heavy stainless steel barrel, the bolt assembly, and a 10-round magazine. If you're running an earlier-generation MRAD, note that some models may require an additional breech adapter to facilitate the swap—Barrett can advise on compatibility for your specific serial range.
The heavy barrel profile is built for shooters who prioritize consistent accuracy over portability. Heavier barrels resist heat-induced point-of-aim shifts during sustained fire and reduce harmonic vibration, making them a classic choice for precision rifle work at distance. Stainless steel construction resists corrosion in harsh field conditions, and the kit ships in a ZCORR anti-corrosion bag to protect the components during storage and transit.
This conversion kit is ideal if you already own an MRAD platform and want to add .308 Winchester to your barrel locker without purchasing an entirely new rifle. The modular design is central to the MRAD's appeal—swap barrels, adjust for different mission profiles, and keep your investment flexible. The 10-round magazine is configured for .308, so you'll have a matched feeding system out of the box.
| Caliber | .308 Winchester |
| Barrel Length | 17 inches |
| Barrel Profile | Heavy |
| Barrel Material | Stainless Steel |
| Magazine Capacity | 10 Rounds |
| Components Included | Barrel, Bolt Assembly, Magazine, ZCORR Anti-Corrosion Bag |
This kit is designed for MRAD platforms. Earlier-generation MRAD rifles may require the large breech to small breech conversion kit for compatibility. Contact Barrett or consult your rifle's documentation to confirm your model's requirements before ordering.
The kit includes the 17-inch heavy stainless steel barrel, the bolt assembly, a 10-round magazine, and a ZCORR anti-corrosion storage bag. Everything you need to complete the conversion is in the Barrett branded bag.
Heavy barrels provide greater rigidity and thermal stability, reducing point-of-aim shift during rapid or sustained fire and minimizing harmonic vibration. They are favored for precision shooting and longer-range applications where consistency matters.
Yes, the barrel is stainless steel, which resists corrosion in field conditions. The kit also includes a ZCORR anti-corrosion bag for secure storage and protection during transport.
Barnett Outdoors
Barnett Outdoors
Barnett Outdoors
Barnett Outdoors
