The high profile Vickers Elite Battlesight rear has a 0.145 wide, deep U-Notch for optimum sighting in low-light, dynamic range conditions and is a perfect match to our 0.125 wide front sights. Two hardened set-screws ensure this sight will never shoot loose under the most demanding conditions. The Vickers Elite Glock Sight set requires the use of a 0.245 tall front sight for all caliber Glock pistols except for .45 ACP and 10mm which will typically require the 0.230 front sight. Overall Sight Height: 0.325 Rear Blade Height: 0.245