I have a Ruger SR1911 and have thought about putting night sights on it. It is not my primary carry gun but all the guns I do carry have night sights. I found a set of Kimber night sights used for a reasonable amount. Will these fit the Ruger SR1911? I can't seem to find a good answer searching I think the sights are Tru Glow TFO's. I have read bad things about them but for the asking price I am willing to give them a try if they will fit.