Konus Fission 4.0 Features The Konus Fission 4.0 is a 1x micro red dot sight built with a special footprint that mounts directly to a Deltapoint Pro compatible Shield RMS/SMS cut in addition to fitting standard Weaver and Picatinny rails. That dual mounting capability lets shooters move the optic between a slide-mounted pistol setup and a rail-mounted carbine without buying a second sight. Four interchangeable reticles a 4 MOA dot a 40 MOA circle and a 50 MOA cross give the shooter a choice between precise aiming and fast target acquisition depending on the task. Ten brightness settings allow the dot to be dialed in for anything from a dim indoor range to bright daylight conditions. A fully waterproof housing protects the internal electronics from rain humidity and accidental submersion making the sight dependable across a range of weather and environments. The built-in 12 hour auto shut off function powers the unit down automatically when left idle conserving the CR2032 battery for extended field use. At a compact 1.96 in length and just 2.29 ounces the Fission 4.0 adds negligible weight or bulk to a pistol or carbine setup. With unlimited field of view and a rugged anodized aluminum body the Konus Fission 4.0 is a dependable direct-mount red dot for sale at GrabAGun. Konus Fission 4.0 Specifications Manufacturer: Konus Model: Fission 4.0 Magnification: 1x Reticle: Multi 4 MOA Dot / 40 MOA Circle / 50 MOA Cross Mount Type: Weaver/Picatinny Rail Deltapoint Pro Footprint Battery Type: CR2032 Battery Run Time: 12 Hours (Auto Shut Off) Brightness Settings: 10 Material: Aluminum Waterproof: Yes Length: 1.96 Weight: 2.29 oz Color: Black Click Value: 1 MOA Available At: GrabAGun