Win XPERT 22 rifle 4 screw scope ring base;   Designed especially for our WolfPup 3/4" tube scopes and rings. 

NOTE: Tip/off mounting big heavy 1" variable power scopes to an aluminum dovetail rail is not recommended! 

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6061T Aluminum 3/8" Dovetail grooved base 6" long allows mounting your WolfPup scope where it needs to be for best eye relief. 

Slide/ Lock adjustment allows use of both 3" and 4" eye relief scopes.    

FYI:  In addition, this base also fits the Late model T-Bolt Browning 22 having a 4-screw drilled and tapped receiver.  

3/8" dovetail groove 6" long 4-hole base.

4 Torx hd. 6-48 screws hold the aluminum base on Winchester's new .22 rimfire bolt action rifle called the "Xpert" 

A long 3/8" dovetailed base allows adjusting your scope position for better eye relief.  Something Winchester forgot about when they just drilled and tapped 4 holes to fit a pair of 7/8" Weaver #15 - bases. 

#1. Short scope Rule of thumb:                      If your scope is 9" and has a 3-inch eye relief then the rear most scope ring location should be positioned directly over the trigger.  Like in the picture shown here-in.  Conversely if the scope ring has to be 1" or more forward of the trigger than a 4" eye relief is best.    

Dealers and Distributor inquires welcome.