Night Fision Holosun 509T Adapter Plate Glock Mos + Tritium Ylw Front Sight Combo 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 tritium front sight and a blank rear with anti-glare serrationsideal for those who prefer a simplified intuitive sight picture when transitioning between red dot and irons. This combo gives shooters an all-conditions solution without compromising performance. Specifications for Night Fision Holosun 509T Adapter Plate + Tritium Ylw Front Sight Combo: Manufacturer: Night Fision Optic Cut: Glock MOS Fabric/Material: 17-4 Stainless Steel Color: Black Gun Model: Glock 17 MOS Features of Night Fision Plate + Tritium Ylw Front Sight Combo 509T to Glock Full Size MOS Includes Night Fision Pistol Optic Plate Includes 330-353 height backup sights: tritium front sight with blank rear for lower 1/3rd co-witness Tritium front provides enhanced low-light visibility Rear sight is blank with anti-glare serrations Compatible with Glock Full Size & Compact MOS models Fits Holosun 509T and other compatible optics (see Pairing Guide) Optic plate machined from 17-4 Stainless Steel nitride coated for durability Optic plate thickness: .2 Extra screws and installation tool included" Package Contents: Night Fision Plate + Tritium Ylw Front Sight Combo 509T to Glock Full Size MOS What firearm models does the manufacturer say Night Fision Holosun 509T Adapter Plate + Tritium Ylw Front Sight Combo is compatible with? The manufacturer says that Night Fision Holosun 509T Adapter Plate + Tritium Ylw Front Sight Combo is compatible with Glock 17 MOSNight Fision GLK-OPBS-509T-MOS-YGZX: Holosun 509T Adapter Plate Glock Mos + Tritium Ylw Front Sight Combo Black