Wondering what to throw on it. It replaces the gas ports so It has to be a scope of some kind. I am already damn accurate with it. I shoot with AR/M4's all day at 50-100 yards open sighted. I like the sights how they are. But to mount something on the rail is going to pretty much fuck that all up considering it will be right behind the sight. It's an Ultimak rail http://www.ultimak.com/products/M1b.jpg Anyone dealt with these before? Good, bad, Ugly? If o what do you have on yours? http://www.ultimak.com/pic11.htm This is what it will look like, But that isn't a mac, You can tell by the open sight ring.