Wilson Combat Battlesight Rear Sight for Glock U-Notch Serrated Blade Black. 145 wide deep U-Notch for optimum sighting in low-light dynamic range conditions and is a perfect match to our .125 wide front sights. The concave non-reflective rear blade is serrated 40 lines per inch while the notch area is recessed into a semi-circular pocket for a crisp protected sight picture. Two hardened set-screws ensure this sight will never shoot loose under the most demanding conditions. This snag-free rear sight also has a shelf shape that enables one-hand slide cycling or malfunction clearance and a rugged non-reflective matte black parkerized finish. The Wilson Combat Glock Battlesight is available with single dot yellow Tritium and plain black serrated rear blades and your choice of black serrated green/red fiber optic tritium and genuine never dulling gold bead front sight styles. The high profile of the Battlesight allows the use of a taller front sight and deeper rear notch for better sight tracking during high speed shooting situations. Specifications for Wilson Combat Battlesight Rear Sight for Glock: Manufacturer: Wilson Combat Gun Make: Glock Color: Black Sight Style: U-Notch Front Material: Serrated Package Contents: Wilson Combat Battlesight Rear Sight for Glock Wilson Combat 933B: Battlesight Rear Sight for Glock U-Notch Serrated Blade Black