The EOTech 557 Holographic Weapon Sight (AR .223 Ballistic Reticle, AA Batteries) has been developed to optimize the functionality of the Holographic Weapon Sight (HWS). The buttons have been moved from the back to the left side for instant access, allowing a magnifier, night vision, or a back up iron sight to fit closely to the Holographic Weapon Sight body. This new button position allows the user to operate the EOTech 557 Holographic Weapon Sight's function switches easier than ever before. Additionally, a portion of the front base has been raised to allow the sight to fit over standard hand guards found on many M-4 or M-16 style weapons.

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.

The EOTech 557 Weapon Sight is configured with a new ballistic matching reticle image for the M4 carbine. The battle tested circle/dot reticle will be offered along with a series of 1 MOA aiming dots that are vertically aligned and calibrated specifically for the ballistic drop of .223 caliber ammunition. The reticle provides 4 aiming dots for target distances of 0-300m, 400m, 500m, and 600m.

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. The Holographic Weapon Sight Model 557 is controlled under the U.S. International Traffic in Arms Regulations (ITAR) and may not be exported without the proper authorization by the U.S. Department of State.