The Do-It-All Micro Red Dot. Handguns. Shotguns. Offset on a carbine. Whether running drills at the range or holding the line during rigorous duty use, the Defender-ST is ready when and wherever you are. Rugged and reliable? Its a given. Large sight window? Absolutely. Motion-activation and a dot with adjustable brightness deliver superior target acquisition, adaptability in all lighting conditions, and faster follow-up shots. Experience what shooters mean when they discuss the ideal, all-round red dot. With the Defender-ST, you're not just range-ready, but armored for the toughness and adaptability your world demands.Specifications for Vortex Defender-ST 3 MOA Red Dot Sight:Manufacturer:VortexColor:BlackMagnification:1 xIllumination Color:RedEye Relief:UnlimitedAdjustment Type:MOAEmitter Type:OpenBattery Type:Lithium Metal, CR2032Red Dot Sights-Footprint:RMRFeatures of Vortex Defender-ST 3 MOA Red Dot SightLarge hard coated aspherical lensmotion activation with 10 minute auto-shutoffShockshield Polymer InsertDeltapoint Pro FootprintFast-Rack TexturingFully Multi-Coated LensesArmortekWaterproofShockproofPackage Contents:Vortex Defender-ST 3 MOA Red Dot SightGlock MOS Adapter PlatePicatinny MountRubber CoverLens ClothCR2032 BatteryCustom ToolMost Common Mounting Screw SetsVortex DFST-MRD6: Defender-ST 6 MOA Red Dot Sight, Black, 4x5.75x2.75Vortex DFST-MRD3: Defender-ST 3 MOA Red Dot Sight, Black, 4x5.75x2.75