Spuhr ISMS One-Piece Mount

The Spuhr ISMS is the standard against which tactical one-piece mounts are measured. Each unit is machined from 7075-T651 billet, hardcoat anodized, and built with an integrated rear bubble level so the shooter never adds a separate anti-cant device. Cant is built into the model number: a SP-4601, for example, is a 34mm mount with 6 MIL (about 20.6 MOA) of cant and a 30mm centerline height, and the family also offers 0, 3, and 9 MIL versions. Seven accessory interface sets and diagonally cut rings give clear turret visibility and real estate for levels, lights, or backup optics. The 30mm, 34mm, and 36mm models cover every serious tactical, ELR, and bolt-gun optic. It is expensive, but it consolidates the mount, level, and accessory rail into one rigid unit.