Mount scopes in a snap. The High QD Scope Mount line from Midwest Industries has the smoothest-functioning QD lever on the market, with superior clamping ability that wont damage or coin the rail surface. A multi-faceted adjustment nut helps operators find the exact right tension without the need for tools. Precision machined for optimum return-to-zero performance and reliability, these mounts provide secure, durable mounting options for larger tube diameter scopes.Features :Designed for 34mm opticsWorks with scopes with up to a 56mm objectiveSmooth-operating Elite Defense QD leverFully adjustable with no tools requiredCan fit rails not machined to Mil-Spec tolerancesHard Coat Anodized 6061 Aluminum1.93 in. from the top of the rail to the centerline of the ring