Nightforce Standard Duty bases are a quality, affordable solution for ensuring that your scope is firmly mounted to your rifle. These aluminum bases are machined to Mil. Std. 1913 rail specifications and hard anodized. Available for a wide variety of firearms, including: Browning A-Bolt • Howa 1500 • Kimber 84 & 8400 • Mauser 98 Large Ring • NEF/HNR Handi Rifle • Remington 700 & XP100 • Ruger American • Ruger 10/22 • Savage Round & Flat Actions Savage Mk II, 64 & 93 Rimfire • T/C Contender & Encore • Tikka T3 & 595 • Weatherby Vanguard & MkV • Winchester 70 & 52 Target NOTE: Clean all mating surfaces thoroughly before mounting. Use a torque wrench and do not exceed recommended torque values: Base Screws: 25 in-lb