Night Fision Holosun 507k Adapter Plate + Blacked Out Sights Combo 507K to Springfield Hellcat Black. Alongside our rugged nitride-coated 17-4 stainless steel optic plate this set includes a lower 1/3rd co-witness backup sight setup featuring a blacked out front and a blank rear with anti-glare serrationsideal for shooters who prefer a clean unobtrusive sight picture when transitioning between red dot and irons. This combo delivers professional-grade reliability without visual clutter. Specifications for Night Fision Holosun 507k Adapter Plate + Blacked Out Sights Combo 507K to Springfield Hellcat: Manufacturer: Night Fision Optic Cut: Springfield Prodogy Fabric/Material: 17-4 Stainless Steel Color: Black Gun Model: Springfield Armory Hellcat Features of Night Fision Optic Plate + Blacked Out Sights Combo 507K to Springfield Hellcat Includes Night Fision Pistol Optic Plate Includes 248-268 height blacked out steel backup sights for lower 1/3rd co-witness Front sight is blacked out; rear sight is blank with anti-glare serrations Compatible with Springfield Hellcat OSP models Fits Holosun 507K and other compatible optics (see Pairing Guide) Optic plate machined from 17-4 Stainless Steel nitride coated for durability Optic plate thickness: 0.08 Extra screws and installation tool included" Package Contents: Night Fision Optic Plate + Blacked Out Sights Combo 507K to Springfield Hellcat What firearm models does the manufacturer say Night Fision Holosun 507k Adapter Plate + Blacked Out Sights Combo 507K to Springfield Hellcat is compatible with? The manufacturer says that Night Fision Holosun 507k Adapter Plate + Blacked Out Sights Combo 507K to Springfield Hellcat is compatible with Springfield Armory HellcatNight Fision SPR-OPBS-507K-HC-ZXZX: Holosun 507k Adapter Plate + Blacked Out Sights Combo 507K to Springfield Hellcat Black