cheap sig parts?

anyone have any leads on cheap sig parts? looking for original stock and sights for a sig 556 classic swat. ive googled and ebayed but everything is coming up either non existant or pretty dang expensive. any good leads would be appreciated. nothing on numrich or brownells. thanks.

Sig no longer makes the rear diopter sight so you'll probably pay a premium for one.

oh, that would explain a lot. is it worth it or are AR sights just as good.

I really like it but it is definitely a personal preference type thing. People that have shot my Sig 556 with the diopter hated it where some loved it. Also be careful getting gun parts on eBay, a lot of times they are fake.

really sucks that I need the front and rear. got it in a trade deal and came with a scope on it. guy didn't have the sights. now I'm going to put out what it costs for a decent scope to buy iron sights. lol