Warne Vapor rails are designed to offer shooters an affordable and reliable mounting platform manufactured for your specific firearm. – The V450-20MOA offers 20MOA of elevation built in for longer distance shooting. – Fits: Howa 1500 & Weatherby Vanguard Short Action Receivers does not fit Weatherby MK-V actions – 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.