BROWNELLS #4 Aluminum Barrel Vise Bushings are designed for professional gunsmiths, offering a range of hole sizes for various barrel diameters.
The bushings are available in both steel for durability and aluminum to prevent marking the barrel, with a special pre-machined bushing included.
These bushings are universal, fitting a wide array of rifles including military Mauser 98, Remington .30-06 Sporter, and standard/heavy barrels on M1A/M14's and M1 Garands.