These are quality aluminum bases from Power Custom that work with all Weaver-style rings. Please note that this base mounts to both the receiver and the barrel, and the barrel must be drilled and tapped to accept this base.
Fits: Ruger 10/22
Notes: Requires drilling and tapping two holes in the barrel. For use with .920" diameter barrels. Attaches to both the factory receiver holes and the barrel.
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