Weaver Top Mount Extension Scope Base #40A Gloss

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: BSA Models Monarch Medium Action in 222, 243 & 308, CF2, Monarch Long Action in 7mm, 270 & 30-06Churchill HighlanderColt SauerEnfield receiver cut down like Remington 72H & R 317 & 322Herters U9 Round ReceiverInterarms (Rossi - Stoeger) HowaMossberg 1500 & 1700Raptor Arms Same as Remington 700 Long ActionRemington 700, 78, 40X, 721 & 725 (all Long Actions) in 270, 280, 30-06, 7mm Mag, 300 Win Mag, 264, 375, 458 Cals., 700, 78, 40X, 722 & 725 (all Short Actions) in 17, 222, 223, 222 Mag, 22-250, 243, 6mm & 308 Cal. & 700 Mzl. Ldr., Ruger M-77 (round top)Sauer 200Smith & Wesson 1500, 1600 & 1700Shilen Round receiverWeatherby Mark V, Mark V Deluxe & Vanguard Notes: Mounting Hardware Included.