Speeds your draw plus provides faster target acquisition. Threaded, rear dovetail filler block allows fast changing of rear sights. Front sights attach with a single locking screw. Aro-Tek Target Sights have low reflection, serrated fronts for sharp, clear target definition. Mfg: Aro-Tek SPECS: Steel, blued, matte finish. Sight heights same as factory. +0 sights fit Glock 17, 19, 22, 23, 24, 34, 35. Includes screws, hex wrench and instructions.