Improve the performance of your Walther PPQ, PPX and CCP with the HIVIZ interchangeable sight. Our bright and ultra-durable sights will enhance your confidence and shooting experience. This sight features all steel construction and LitePipe diameter of 0.090. Blade width: 0.125″. Blade Height: 0.182″. Front post screw attachment with 0.050 wrench. Front Sight Length: 0.810″. Front Sight Width: 0.145″. Front Sight Height: 0.217″. (does not fit the PPQ M2 in .22 caliber), Walther P99 and the Smith and Wesson P99.