Warne Vapor rails are designed to offer shooters an affordable and reliable mounting platform manufactured for your specific firearm. - The V473-20MOA offers 20MOA of elevation built in for longer distance shooting. - Fits: Bergara B-14 Short Action Christensen Arms Bolt SA Rem 700 style CVA Paramount Muzzleloader Rem 700 SA w/6-48 screw receiver - Precision CNC machined from 6061/T6 aluminum - Mil-Spec hardcoat anodized finish for abrasion and corrosion resistance. - Self centering tapered T-15 Torx screws. - Fits Picatinny & weaver style rings and are NATO-STANAG compatible.