The XPS2-0 is the most compact offering from EOTech coming in at 9oz. For this reason it is a great choice for law enforcement, military, and hunters. Running on a single 123 battery the XPS2-0 has a continuous run time of up to 600 hours. The XPS2-0 small size gives you ample room for rear iron sights or magnifiers. This EOTech will mount to any 1" Weaver or 1913 Picatanny rail. Not night vision compatible.