Made as a collaboration between Holosun Optics and Primary Arms Optics, the illuminated HE507K with ACSS Vulcan Dot Reticle brings the revolutionary Vulcan aiming system to a micro reflex footprint.Designed for concealed carry, the HE507K is lightweight, durable, and dependable, with up to a 40,000-hour runtime on medium settings. This sight retains all the core features and technologies of the standard Holosun model, including the Multi-Reticle System, Shake Awake technology, and a built-in Lock Mode. With 12 illuminated brightness settings and intuitive push-button controls, the HE507K works in any lighting condition and is even compatible with night vision devices.This co-branded optic features the ACSS Vulcan Dot reticle system, which improves acquisition and recovery speed through its patented outer reference circle. When aimed on-target, the ACSS Vulcan Dot reticle appears as a simple, unobtrusive 3 MOA dot. When your aim is off-target, the edge of the 230 MOA outer circle guides you back to center. ACSS Vulcan Dot alleviates one of the main weaknesses of micro reflex optics, ensuring you can always find your reticle aiming point, despite the smaller optical aperture.The HE507K with ACSS Vulcan Dot Reticle features an RMSc footprint and is natively compatible with many of the most popular concealed carry pistols.Specifications for Holosun HS507K Compact Pistol Red Dot Sight:Manufacturer:HolosunColor:BlackFinish:Hard Coat AnodizedFabric/Material:7075-T6 AluminumMagnification:1 xObjective Lens Diameter:0.58 - 0.77 inObjective Window Size:0.58x0.77 inReticle:ACSS Vulcan, 3 MOA DotIllumination Type:LEDBrightness Settings:12Eye Relief:UnlimitedAdjustment Type:MOAAdjustment Click Value:1 MOAParallax:Parallax FreeOptical Coating:MulticoatedBattery Type:CR1632Battery Quantity:1Battery Life:50,000 hoursWater Resistance Level:IP67Weight:1 ozCondition:NewPackage Type:BoxMagnification Type:FixedBrightness Index:12Quantity:1Attachment/Mount Type:Shield RMS FootprintFeatures of Holosun HS507K Compact Pistol Red Dot Sight:Ultra-compact size for concealed carry applicationsTwo Reticle Settings: Dot + Circle, and Dot onlyShake Awake - Motion on with last setting recallParallax-free, unlimited eye relief10 daylight and 2 night vision compatible brightness settingsIP67 CertifiedPackage Contents:Holosun HS507K Compact Pistol Red Dot SightHolosun HS507K-X2-ACSS: HS507K Compact Pistol Red Dot Sight, 3 MOA Red ACSS Vulcan Reticle, BlackHolosun HE507K-GR-X2-ACSS: HS507K Compact Pistol Red Dot Sight, 3 MOA Green ACSS Vulcan Reticle, Black