ZeroTech's locking diopter system allows you to secure your diopter setting with a lock ring and achieve a perfect 1 X image every time. The removable magnification throw lever makes power changes a breeze, coupled with the RAR illuminated reticle makes for the ultimate speed shooting combination. Low profile, large diameter capped turrets provide precise and audible indexing and are guaranteed to return to zero every time. A 30mm main tube will ensure excellent mounting versatility and high strength.