Ensure reliable backup sighting on your Glock or Walther PDP with the C&H Precision Backup Iron Sights designed specifically for SRO-height optics. These precision-engineered sights provide a low-witness profile that minimizes obstruction of your red dot's field of view while delivering a usable point of aim if your optic fails or becomes obscured. Key Features Low-Witness Design: Sits approximately 0.075 to 0.100 inches into the optic FOV for lower 1/6 to 1/8 co-witness, preserving maximum visibility through your Trijicon SRO or similar optic. Precision Heights: Front blade approximately 0.320 inches tall and 0.130 inches wide; rear blade approximately 0.325 inches tall with a 0.150-inch notch for consistent alignment. Durable Construction: CNC-machined from high-grade steel with a rust-resistant matte black finish for long-term reliability in demanding conditions. Optic Compatibility: Optimized for SRO-height red dots on OEM optic-ready slides, direct-milled Glock slides (0.125-inch cut depth), or Glock MOS with C&H Precision V5 plate, plus Walther PDP platforms. Wide Pistol Fitment: Compatible with numerous Glock models including 17, 19, 34, 45, 47 and others, as well as Walther PDP pistols. Specifications Weight: 1.2 oz Dimensions: 1.5 inches (length) x 1 inch (width) x 0.55 inches (height) Finish: Matte black Material: High-grade steel