This aluminum base slides onto any standard 3/8" rimfire or airgun rail and converts it to the standard Weaver 7/8" width. Designed for use with Weaver Tip-Off rings.
3/8" grooved receivers
This base slides on to a rimfire 3/8" receiver groove and converts it to standard Weaver dimension of 7/8" wide.
The base will also take 3/8", tip off style rings.
Mounting Hardware Included
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