This red dot uses the Holosun K-series footprint standard. Essential info Footprint standard: Holosun K-series footprint standard Reticle: 2 MOA dot & 32 MOA circle [red] Window size [height x width]: 14.7 x 19.5 mm [0.58 x 0.77"] Total dimensions [length x width x height]: 41.1 x 27.2 x 24.1 mm [1.62 x 1.07 x 0.95"] EPS Carry–RD-MRS has Holosun’s 650nm Red Super LED with Holosun’s MRS (Multi-Reticle System) and uses a 1620 battery which provides up to 50k hour battery life, Solar Failsafe, and Shake Awake technology. EPS Carry-RD-MRS is compatible with popular subcompact pistols including G43 MOS, G48 MOS, Hellcat, P365 X/XL, and more. 2 MOA dot & 32 MOA Circle Up to 50,000 Hours Battery Life Parallax-free & Unlimited Eye Relief Aspherical Glass Lens with Zero Distortion Shake Awake™ Technology with Last Setting Recall 7075 T6 Aluminum Housing Solar Failsafe™ Specification OPTICAL SPECS 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 SPECS Power Source Solar & Battery Battery Type CR1620 Battery Life (Hours) 50000 Brightness Setting 10 DL & 2 NV PHYSICAL SPECS Window Size 0.58x0.77 Dimension (in) 1.62×1.07×0.95 Weight (oz) 1 MECHANICAL SPECS Housing Material 7075 T6 Aluminum Surface Finish Anodize Adjustment per Click 1.5 MOA W&E Travel Range ±30 MOA ENVIRONMENT SPECS Storage Temperature -40℃~70℃ Working Temperature -30℃~60℃ Submersion IPX8 Vibration 5000G