LUCID OPTICS is proud to offer the world's first variable magnifier for red dot sights. Now the operator is able to transition quickly between a CQB operation to a designated marksman capability in an instant with the same weapons platform. LUCID OPTICS 2x to 5x Variable magnifier mounts behind any red dot sight (with the right mount). This high quality optic offers crystal clear optical performance, and maintains an expansive field of view with a comfortable eye relief through the entire magnification range. NOTE: The 2x to 5x Variable Magnifier from LUCID OPTICS has been updated to offer an ocular focus ability.Features:100% shock-proof, fog-proof and water-proof2x to 5x magnificationFully multi-coated