From handguns to shotguns and everything in between, the Defender-ST(TM) red dot is as versatile as your shooting interests. Whether this optic is part of your everyday carry setup or mounted to your shotgun sneaking around the turkey woods, the Defender-ST(TM) large ultra-clear window is the perfect size for a smooth draw out of concealment and wide enough to quickly acquire the dot on that fast-moving tom. Loaded with ShockShield(TM) technology and motion activation for instant readiness and whatever challenge you can throw at it. If you're looking for a durable and versatile red dot that fits all your shooting needs, look no further than the Defender-ST(TM). KEY Mfg: Vortex Optics