The Holosun AEMS-CORE-X2 is an enclosed rifle sight featuring a 2 MOA dot, large viewing window, reduced-parallax optical system, Shake Awake, and a side-loading CR2032 battery tray. The optic uses a 7075-T6 aluminum housing with MAO finish and includes a four-post lower 1/3 co-witness mount. The AEMS-CORE-X2 is available with red, green, or gold 2 MOA dot reticles. Holosun lists Picatinny as the direct mount and identifies the platform as compatible with various firearms including shotguns, pistols, rifles, air rifles, and crossbows.