EOTEch 552.XR308 Holographic Weapon Sight. The Model 512 is the most popular model HWS. This tactical optic is perfect for agencies that want the best in CQB speed and versatility, without the need for night vision compatibility. Features: AA Battery model (supports Lithium and Alkaline). Reticle: 65 MOA circle with 1 MOA aiming dot. Includes rugged aluminum hood assembly and knobbed, tool-less mounting bolt Interfaces to 1" Picatinny (MIL-STD-1913) or Weaver rail. Specifications: Magnification: 1x. Weight: 10.9 oz. Length/Width/Height: 5.4in x 2in x 2.25in. Contents: EOTEch 552.XR308 Holographic Weapon Sight.