Front Base- Anschutz Mark12; H&R 250, 251, 264, 265, 365, 450, 550; Magnum Research Lone Eagle SSP 91 Pistol; Marlin 39A with a round barrel; Mossberg 43, 44, 144, 46BT, 35; Mossberg 45 and 46 early models with 13/16" diameter barrels; H&R 250, 251, 264, 265, 365, 450 & 550; Savage 19, 23; Savage 93 Rear; Savage 99, 1895, 1899; Savage 93R17, Mark II, Cub; Stevens 300, 305, 310, 315, CADET; Stevens 418, 418 1/2; Winchester 75 Target. Rear Base- Anschutz Mark12; Mossberg 40; Remington 514; Savage 3, 93, 99, 1895, 1899, 93R17, Mark II and Cub; Stevens 53, 300, 305, 310, 315, CADET, 418, 418 1/2, 83; Magnum Research Lone Eagle SSP 91 Pistol.

Features:Aluminum;For Weaver rings;Compatible with select firearms