Grab a Holosun 507K for your subcompact or single-stack handgun! The HS507K X2 is an open reflex red dot sight with all the industry-best features including up to 50,000 hours of battery life, parallax-free, Lock Mode to prevent accidental changes while conceal carrying, a multi-reticle system with 32 MOA circle and 2 MOA dot, and Shake Awake so it's always ready when needed. Included Multi Tool User Manual Lens Cloth Specs 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: Battery Battery Type: CR1632 Battery Life (Hours): 50,000 Brightness Setting: 10 DL&2 NV Physical Data Window Size: 0.58x0.77 Dimension (in): 1.6x0.98x0.95 Weight (oz): 1 Mechanical Data Housing Material: 7075 T6 Aluminum Surface Finish: Anodized Adjustment per Click: 1 MOA W&E Travel Range: N/A Environmental Data Storage Temperature: -20?~65? Working Temperature: -20?~51? Submersion: IP67 Vibration: 5000G