Possum Hollow Bore Guide #67i - .22-250 Remington, .243 Winchester, 6.5 x 55 Swedish Mauser Fits Sako 75, Sako 85, Integral Solvent Port Action Fit_CZ-453 They are precision CNC machined

They are precision CNC machined from solid aluminum to precise cartridge dimensions

Utilising the proper base design provides incredible in-flight stability for long-range shooting

Suitable for: 338 Winchester Magnum

Regular use gives your barrel a mirror-like finish that helps prevent build-up of copper and carbon fouling

Possum Hollow Bore Guide #67i - .22-250 Remington, .243 Winchester, 6.5 x 55 Swedish Mauser Fits Sako 75, Sako 85, Integral Solvent Port Action Fit_CZ-453 They are precision CNC machinedAligns the cleaning rod centrally to the bore to prevent throat or rifling damage. O ring seals the chamber and prevents solvents from contaminating the action and trigger and helps to keep the bore guide firmly in place. Large replacement O ring fits all guides and solvent port.