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