The CTS-25 Electronic Sight is a compact Red Dot Sight for rifles and carbines. Featuring a 4.0 MOA round aiming dot, the CTS-25 will elevate your long gun's performance instantly. Installed in seconds by utilizing an included riser for rail mounting, the red dot attaches effortlessly to M1913 Picatinny rail sections. REMOVABLE RISER INCLUDED Specifications: SIDE ACCESSIBLE BATTERY COMPARTMENT (CR2032 BATTERY INCLUDED) INCLUDED REMOVABLE RISER BATTERY LIFE: 1 YEAR SHOCK, IMPACT, FOG, WATER, AND VIBRATION RESISTANT DESIGN HIGH EFFICIENCY LED FOR YEARS OF MAINTENANCE-FREE USE LARGE FUNCTION BUTTONS FOR BRIGHTNESS SETTINGS LIMITED LIFETIME WARRANTY