Pro-Shot's Stopper Adjustable Bore Guide for your bolt action rifle. Made from aircraft grade anodized aluminum with tips and ends that are manufactured using the chemical resistant Delrin. Compatible with .22-30 Cal bolt action rifles. Fits- Remington 700-40X-78-72-722-725-788 XP-100 Model 7 600-660; Ruger All Model 77; Winchester 70-54-56; Savage 110-112V; Mauser 98; Enfield 1917 Hart Stolle; Kimber 89; Browning A Bolt; Dakota.