Glock Ghost Ring Rear Sight V1.1.3: FFFTech/FFFTechnology A ghost ring sight, compatible with standard 6.5mm height Glock front sights. Not as precise as standard notch sights, but quicker to acquire a sight picture on target. Racking the slide from the top can be aided by the rear sight's overall height. Update V1.1.3: Increased dovetail mount height by .15mm, and increased thickness (front to back) by .12mm. Printer Used: Ender 3 V2 Filament Used: PLA+ Print Settings: Extruder: 218C Bed: 56C First Layer Print Height: .20mm Standard Layer Height: .12mm Wall Thickness: .40 Wall Perimeters: 4+ Infill: 25% Infill Pattern: Gyroid Material Flow: 100% Print the sight on it's front face.