Eotech XPS2-300 Blackout 1x Holographic Red Dot - Circle 2 Dot - Designed with tactical shooters in mind, the XPS2-300 offers a 300 Blackout ring with 2 dots. This red dot scope is offered in the XPS2 platform, it is the shortest and lightest HWS sight available. Its size and weight make it convenient for hunters, military and law enforcement officers to carry. The single compact lithium 123 battery configuration opens up more space on the rail for rear iron sights or magnifiers.