Hey guys first off I want to say thanks for all of the responses I've received in the past. My dad and I are new to pistols so we have a lot of first timer questions. Anyway how much of a job is it to install night sights on a model 66 or is it even possible. The sights now are fixed and I thought you couldn't change fixed sights. My dad has a little trouble picking up the front sight at dusk. Thanks in advance