The 
EOTech 511.D1 Tactical Holographic Weapon Sight (1 MOA Dot Reticle, Latest Revision F) is the economical solution that sacrifices very little. This 
EOTech Scope includes many of the bells and whistles the 
holographic weapon sight is known for. The 
 scope's smaller,   lighter design is perfect for tactical environments, hunting game, or knocking   down targets at a more affordable price point.
       
The 
Revision F family now features exteded Battery Life. Through an extensive research and development effort, 
EOTech's team of engineers has optimized the holographic fabrication process to dramatically improve the optical efficiency of the Holo Weapon Sight. The result is 2x the battery life compared to previously published EOTech statistics.
In addition 
EOTech's Revision F features enhanced 
electronic circuitry which allows the brightness adjustment range to expand by a factor of 20x !! Now, the impressive low light capabilities of the Holographic Weapon Sight are complimented with a reticle that is 2x brighter at the highest setting. Already recognized as the brightest sight in today's military market, the EOTEch's Holo Weapon Sight further eliminates any concern of reticle washout in desert or artic conditions.
This 
EOTech Holographic Weapon Sight  is the 1st electro-optic   sighting system to apply 
holographic technology to small and medium-sized weapon   platforms. When used in Close Quarters Battle (CQB) environments, this   revolutionary weapon optic delivers    amazing speed and accuracy gains,   uncompromising use of peripheral vision, leaves no muzzle-side optical signature   and is packaged in a compact, durable unit.
Now deployed with elite   Special Forces and SWAT teams the world over, the 
EOTech Scopes deliver vastly improved   shooting performance for all levels of operators.
The 
EOTech 511.D1 Holographic Weapon Sight mounts to any universal Picatinny mounting rail (supports standard   Weaver dovetail) with an integral mounting platform for adaptation to user   preferred eye relief. This 
EOTech Scope can interface to any   standard issue M16 or M4 variant in either a fixed carry handle or flattop   receiver, and with no modifications to the weapon. The M16 and M4 mounting   platforms provide for the functionally critical aspect of co-witnessing the iron   sights within the 
holographic scope's Heads Up Display while maintaining the operator's   critical check weld position.
The 
EOTech 511.D1 Holographic Weapon Sight (1 MOA Dot Reticle) uses two "N" type batteries.
WARNING: 
This Holographic Weapon Sight must be exported from the United States in accordance with Export Administration Regulations ECCN 0A987. Diversion contrary to U.S. law is prohibited. In accordance with U.S. law (Title 15 CFR Part 746 and Supplement No.1 to Part 774; and Title 31 CFR) resale/re-export or transfer to certain designated countries is prohibited without prior written consent of the United States Department of Commerce.