Wilson Combat 669B: The Wilson Combat high profile Vickers Elite Battle sight rear has a .145" wide, deep U-Notch for optimum sighting in low-light, dynamic range conditions and is a perfect match to the Wilson Combat .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 Vickers Elite Battle sight is available with single dot Tritium or plain black serrated rear blade. The high profile of the Vickers Elite Battle sight allows the use of a taller front sight and deeper rear notch for better sight tracking during high speed shooting situations. Note: Sights may require minor fitting. The Vickers Elite Glock Sight set requires the use of a .245" tall front sight for all caliber Glock pistols except for .45 ACP and 10mm which will typically require the .230" front sight. These front sights are taller than factory Glock and not compatible with standard factory rear sights without adjusting the sight height.