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 Weaver 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. A two-piece Maxima tactical base from Warne Scope Mounts lets you prepare a Browning to hold a scope securely. We used premium steel in this two-piece scope base for M918/918M Browning A-Bolt rifles for durability and strength in a low profile - as well as a sleek look you'll love. Featuring a Weaver design, these rails are also equipped with a full-width recoil slot in each base, giving the recoil keys of Warne rings the most bearing surface available. Because they are low profile you can use Warne quick disconnect rings for switching back to open sights and see over the bases and then back to magnified optics with our QD return to zero rings. Mounts to receiver with 6-48" Length Screws.