Item #53031, On and off it maintains zero. Aluminum top mount rings for 1" tubes. These rings only fit Gorilla bases. 2 Pc. Set Muzzleloader standard finish base and standard finish medium rings. Item #53032, 2 Pc. set Muzzleloader standard finish base and standard finish see-thru rings. Accomodates scopes with objectives up to 50 mm.
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