Precision-machined aluminum scope base for Marlin 36/336 and Mossberg 640 rifles. Features Weaver's cross-lock design for secure ring mounting and reliable performance.
Fits: Marlin 336
The Weaver #63BS is a time-tested mounting solution for classic lever-action and modern sporting rifles. This single-piece aluminum base delivers the dependable performance that generations of shooters have relied upon.
Weaver bases represent straightforward, no-nonsense mounting solutions. The #63BS top mount configuration provides excellent sight picture and works seamlessly with standard Weaver rings and optics. Whether you're mounting a classic scope or modern red dot, this base delivers the rock-solid foundation your rifle deserves.
No gunsmithing required—simply attach and mount your optics with confidence.