Nobody makes bases to fit as many guns as Weaver. Yet each base is machined to tight tolerances for a custom fit. They're designed to fight the effects of recoil with a square cut notch that precisely mates to the sturdy cross bolt in every Weaver Detachable Ring. Custom hardened fastening screws come with every Weaver base.

No.54 mount

Fits:
Browning BAR, BAR II and Mark II, front or rear
Browning BLR Lightning lever action and BRP pump action, front or rear
Colt Coltsman .264 and .30-06 round receiver, front or rear
H&R 300 & 301 long action made after 1973, rear
Musgrave Mark I and II, rear
Shultz & Larsen, rear
Springfield 03, rear; gunsmithing required

Note:
This is only a single mount. You will need to order two mounts for mounting a scope.