Really, calling them "military style rifles" isn't a very good description either. After all, the military still uses such weapons as the Remington 700.
I prefer the evil black rifle term myself. To the unintiated (i.e. most media and anti-gun types) a pic of my wood stock M1A with 22 inch barrel looks like a "hunting rifle". But put the modernized stock on it and those same people will call it an "assault weapon". Ditto for rifles like the mini14, SKS, etc.
By the way, why not go with the Sig 556?