A difficult install - Kensight DAS 1911 Defense Adjustable Rear Sight White Dot with Serrated Blade

Although this is advertised as being a NOVAK compatible sight I found that the angle of the bevel did not match the NOVAK non adjustable sight I was replacing on my Ruger 1911. Several hours of light filing was required before this sight was ready for instillation into the slide. Unfortunately, I damaged the windage adjustment while driving the sight into the slide so I am basically back to a non adjustable rear sight. Your experience may be different than mine. Just don't expect a simple replacement as fitting will most likely be required.