WEAVER NUMBER 12 TOP MOUNT BASE
USED AS FRONT BASE ON: MARLIN, REMINGTON 514, 550, STEVENS 57, 76, 417, 12, 762, WINCHESTER 74
USED AS REAR BASE ON : MARLIN 80, 81, 980, MOSSBERG 25, 26, 42, 45, 46, 46A, 46B,
http://www.weaveroptics.com/rings_bases/bases/top_mount_base_pairs/
