Not sure if the company is still in business, but Arii made several armor kits in 1/48. The patriot missile system is one kit that comes to mind. Seems as if the prime mover for that system was pretty inaccurate, but the missile launcer system was a little better. Come to think of it, I saw a few of their kits in the hobby shop I was in this afternoon; trouble is, I wasn't paying attention to them, so I can't say what was on the shelf.
Gip Winecoff