Weaver Top Mount Extension Scope Base #402 Matte Black

Each Weaver base is machined to the tightest tolerances for a custom fit. They are designed to fight the effects of recoil with a square-cut notch that precisely mates to the sturdy cross bolt in every Weaver detachable ring. Fits: Cooey 71Einfield (Cut like Winchester 70)H & R Models 300, 301, 330, & 370 before 1973; 300, 301 LA Post 1973 (270, 30-06, 7mm, 300 Winchester) Herters J9High-Standard High-PowerInterarms ViscountMarlin Models 455 & MR7Mauser Model 98FN, Swedish 96, & Bauer 3000 & 4000Musgrave Models Mark I-IVNavy Arms Country Boy Muzzle LoaderParker-Hale Models 1000, 1000C, 1100, 1200, & 1700Savage Models 10, 12, 16, 510, 512, & 516 Short Action Rifle, 110 (E & S), 111, 112 (R, V, & FV), 116 FSS (Long Actions); 210 Shotgun - use X-high rings; Striker PistolSchultz & LarsenSears Models 50, 51, 51L, & 53 Notes: Mounting Hardware Included.