The only real practical reason I could see would be for hunting, or if SHTF it may be handy to not have a rifle stand out being completely black. If you really had to, you could just use two or three cans of camo spray paint and you'd have a camo rifle. True the spray paint won't hold up like a duracoat, but as it wears away it seems to be able to blend in more.
I get mixed feelings on painting guns, because even though the finish may be a positive thing, it's not going to add any street value to your gun. Nutnfancy makes a good arguement for painting your gun and I think his thoughts sound reasonable.
I've never done it, but I am considering giving it a try on a 10-22 I have. Right now I just have to decide if I'm going to put the tech sights on it before giving it a rattle can job.
I get mixed feelings on painting guns, because even though the finish may be a positive thing, it's not going to add any street value to your gun. Nutnfancy makes a good arguement for painting your gun and I think his thoughts sound reasonable.
I've never done it, but I am considering giving it a try on a 10-22 I have. Right now I just have to decide if I'm going to put the tech sights on it before giving it a rattle can job.