Weaver's top mount base is machined to tight tolerances for a custom fit.It offers maximum strength for rings to hold tight and is constructed of aluminum.Fits bsa monarch medium action in 222, 243 & 308, long action in 7mm, 270 & 30-06, cf2; churchill highlander; rem 721; herters u9 round receiver; howa 1500; mossberg 4x4, mossberg 100 atr, 1500, 1700, mvp; raptor arms; rem 700, 78, 40x-l, 721 & 725 (long actions), 700, 78, 40x-s, 722 & 725 (short action);s&w 1500, 1600 and 1700; weatherby vanguard, mark v standard caliber & 240mag, centerfire pistol, 224 varmintmaster, ultra lightweight.

Type: 1-Piece Base
Model: Top Mount
Style: Top Mount
Misc: N/A
Finish: Black Matte
Material: Aluminum
Pieces: 1
Gun Type: Rifle
Mount Type: Screws
Rings Included: No