Holosun 507K X2 - 2 MOA Red Dot Reflex Sight The HS507K X2 is an open reflex optical sight designed for concealed carry pistol applications. This Holosun 507K X2 is compatible with our M.R.A. red dot adapter. The X2 Series pistol optics feature two improvements. First is the addition of Lock Mode from our 2018-2019 LE pistol optic models. Lock Mode, when activated, locks the buttons preventing inadvertent setting changes. Second, the buttons have been redesigned to compliment the Lock Mode by placing them lower and out of the way. Additional features include Holosun's Super LED with up to 50k hours battery life, Multi-Reticle System, and Shake Awake. Features: Ultra compact size for concealed carry applications Three Reticle Options: 32MOA circle and 2MOA dot only and 32MOA circle only Shake Awake - Motion on with last setting recall Parallax free, unlimited eye relief Drain holes on both sides of the optic allow for excess water to drain in wet conditions CNC milled 7075 Aluminum Housing 10 day light and 2 night vision compatible brightness settings Window Size: 0.58x0.77 inches IP67 Certified Specifications for Holosun HS507K X2: OPTICAL DATA Reticle: 2 MOA Dot & 32 MOA Circle Light Wavelength: 650nm Reticle Color: Red Parallax Free: Yes Unlimited Eye Relief: Yes Magnification: 1x Multi-Coatings: Yes ELECTRONIC DATA Power Source: Solar & Battery Battery Type: CR1632 Battery Life (Hours): 50000 Brightness Setting: 10 DL & 2 NV PHYSICAL DATA Window Size: 0.58x0.77 Dimension (in): 1.6x.98x.95 Weight (oz): 1.5 MECHANICAL DATA Housing Material: 7075 T6 Aluminum Surface Finish: Anodize Adjustment per Click: 1 MOA W&E Travel Range: NA ENVIRONMENT DATA Storage Temperature: -20~65 Working Temperature: -20~51 Submersion: IP67 Vibration: 5000G MSRP: $341.16 Red Dot Optics are not manufactured by OuterImpact and as such; any warranty issues will need to be addressed directly with the optics manufacturer. OuterImpact only offers an exchange or refund if the optic is returned to us unopened.