Schmidt and Bender Zenith 2.5-10x56 Flashdot

Zenith 2.5–10 x 56
Its 56mm objective lens makes this the choice for low—or almost no—light. While providing some of the highest light transmission levels ever achieved in a rifle scope, it still measures only 13 inches overall, making it the shortest 56mm scope on the market. Especially appropriate for upgrading older firearms with existing mounts.