I want to replace my stock sights on my RIA GI 1911, but I'm not sure what dimensions I need to get, or if there is a special type of cut. I know the rear sight is a dovetail, and the front is "staked" but is that all I need to know? Could I order any type of sights in which the rear is dovetail and the front has a tenon? Or is there a specific dimension, cut, brand, etc