Advance Rifle Optic-EVO-SPR-RD & HM3X is the (Advanced Rifle Optic) EVOlved. Advance Rifle Optic-EVO features an all-new 26mm housing design that offers a larger sight picture providing the user with more information for improved performance shooting along with our new lower 1/3 co-witness pedestal mount. The newly designed housing mates perfectly with our magnifier series and includes a new lens cap and anti-reflection device system. Additionally, Advance Rifle Optic-EVO-SPR-RD is available with our new Special Purpose Reticle (SPR) which is a bullet-drop compensating and ranging reticle which balances the performance of a 2MOA dot with accuracy at intermediate distances. The HM3X is an aluminum bodied 3X magnifier designed for use in conjunction with a red dot sight. The HM3X is feature-packed and includes a quick release, ambidextrous, flip-to-side Picatinny rail mount. Holosun includes a spacer with the HM3X that provides compatibility with absolute and lower 1/3 co-witness dot heights for maximum compatibility. The HM3X has a generous 2.75” of eye relief, is IP67 certified water resistant, and includes windage and elevation adjustment for precision zeroing to your optic's zero. The HM3X also includes a built-in flat driver tool for easy adjustments. Hardcase Included