MTM Long Actions Bore Guide For 25 to .378 WBY. Mag. calibers. Fits Remington 700, 788 long actions; Winchester 70 & 54 long actions; Ruger 77 long actions; Mauser 300; Weatherby Mark V long actions and Vanguard actions Also for Browning A-bolt long action standard & magnum calibers; Savage 110; Mossberg 3500; Sako long actions(AV); and other long actions Assures perfect alignment of a cleaning rod to the bore Prevents solvent contamination of magazine and trigger mechanism Protects a rifle's finish; Made in USA