Weaver Rimfire Rifle Scope can make the most out of .22s and airguns. That's because Weaver put big effort into Weaver Riflescopes for smaller calibers. Weaver Rim-Fire Scope is designed with the same rugged, sturdy one-piece aluminum housing that keep Weaver larger Rifle-Scopes waterproof and fogproof, Weaver Rim Fire Riflescope have the same fully multi-coated, nonglare lenses, and with 28mm objective lenses of Weaver Rimfire Classic Riflescopes they deliver excellent low-light brightness, just like every Weaver does.