BSA: Monarch Medium Action in 222, 243, and 308, CF2, Monarch Long Action in 7mm. 270, and 30-06.
Churchill: Rear mount - Highlander.
Enfield: Rear Mount - with receiver cut down like Remington 721.
Herters: Rear Mount U9 Round Receiver.
Howa: Rear Mount Howa.
Mossberg: Rear Mount 100 ATR, 1500, 1700.
Raptor Arms: Rear Mount Same as Remington 700 Long Action.
Remington: 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.
Weatherby: Rear Mount - 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".