The OPMOD EOTech EXPS2-DCR OP DCR Chevron Reticle Holographic Red Dot Sight maximizes rail space with its compact size and allows for co-witnessing of iron sights. It has convenient side buttons that allow you to adjust the optic to your exact specifications, allowing for on-the-go settings changes that fit your new circumstances. Additionally, these Holographic Red Dot Sights pair perfectly with a magnifier to increase your range and feature an adjustable, locking, quick-detach lever for easy attachment and removal.