We have a EOTECH 557 Holographic Weapon Sight, AR223 Reticle, NV Compatible, AA Battery (557.AR223) in stock that was a counter sample. Now on sale for $509.00 at $191.00 off. Item Summary: For instant access, the buttons have been moved from the back to the left side allowing a magnifier, night vision, or a backup iron sight to fit closely to the HWS body. This new button position allows the user to operate the HWS function switches easier than ever before. Also, to allow the sight to fit over standard hand guards found on many M-4 or M-16 style weapons, a portion of the front base has been raised. The 557 Eotech Holosight comes with a new ballistic AR223 reticle. This customized reticle gives a multipurpose image that is calibrated to the specific trajectory of the M4 Carbine. The reticle provides 4 aiming dots (all 1 MOA in size) for target distances of 0-300m, 400m, 500m, and 600m. The battle tested and proven circle/dot reticle is combined with a series of 1 MOA aiming dots that are vertically aligned and calibrated especially specifically for the ballistic drop of .223 caliber ammunition. The Holographic Sight has been tested and designed to provide reliable, consistent performance, even in the most hostile operating environments. This HWS is waterproof (submersible to 33 feet depth), shockproof, fogproof, and withstands extreme temperature variations. Parameters: Field of View (100 yds): 30 yds (28m) at a 4" eye relief Magnification: 1x Eye Relief: Unlimited Optical Surfaces: Anti-glare coating Mount: 1" Weaver or Picatinny (MIL-STD-1913) rail Adjustment Range: ±40 MOA travel Features: Compatible with Gen I-III+ Night Vision Systems (tandem operation) Buttons on left side of sight (not in back) to work specifically with NV or magnifiers Ballistic reticle specific to .223 caliber munitions AA Battery model (supports Lithium or Alkaline) Raised 7mm base with knurled cross bolt Comes with Sight: Limited 2 Years Warranty If you are interested in this EOTECH Holographic Weapon Sight send me an email to email@example.com.