EOTECH EXPS2-0 - Holographic Weapon Sight in Black/Tan hood with 68 MOA ring and 1 MOA dot reticle Mount - Quick Detach lever fits 1' Weaver and MIL-STD 1913 Rails Adjustable Brightness - The EXPS2 has 20 brightness settings for use in any lighting scenario 3.8' x 2.3' x 2.9' (96.5 x 58.4 x 73.7 mm)