The silver Top Mount Base #36S from Weaver has been machined to tight tolerances for a custom fit. The aluminum base offers maximum strength so that the rings will hold tight.
Rear Mount: Monarch Medium Action in 222, 243, and 308, CF2, Monarch Long Action in 7mm, 270, and 30-06
Rear Mount: Highlander
Rear Mount: with receiver cut down like Remington 721
Rear Mount: U9 Round Receiver
Rear Mount: Howa
Rear Mount: 100 ATR, 1500, 1700
Rear Mount: Same as Remington 700 Long Action
Rear Mount: 700, 78, 40x-L, 721, 725 (all long actions), 700, 78, 40x-S, 722, 725 (all short actions), 700 muzzleloader
Smith & Wesson
Rear Mount: 1500, 1600, and 1700
Rear Mount: Vanguard, Mark V standard caliber including .240mag, Centerfire pistol, 224 Varmintmaster, Ultra Lightweight
Notes: Vanguard - Shimming is probably required for perfect scope alignment. For shorter tube scopes or red dot scopes use #402 extension front base or one-piece base if available. Extension base allows an extra 0.689".