Strength and versatility Warne Maxima steel bases are the strongest and most versatile mounting system available today. The simple low profile design along with steel construction is a significant upgrade from any other 2 piece bases. The Maxima Steel Bases are modeled around the popular we’ver design which is one of the strongest and most versatile mounting systems available today. The low profile of the Maxima Steel Bases give your firearm a sleek look. When used in conjunction with Warne Maxima QD Rings the shooter is able to utilize the open sights by looking over the top of the bases without sacrificing the normal shooting position behind the firearm. Maxima Bases also offer a full width recoil slot in each base. This feature allows the recoil control keys of Warne Rings to attain maximum bearing surface. Mounts to receiver with 6-48″ Length Screws. Bergara B-14 BSA Monarch round receiver Christensen Arms bolt action Rem 700 style Churchill Highlander CVA Paramount Muzzleloader Herters U-9 (drilled and tapped) Howa 1500 & 1700 Mauser Model 18 Mossberg 1500 & 1700 Nosler M48 Raptor Arms.