I picked up a HK512 in a trade and was wondering what any of you thought it was worth. I cant find much info on it other than I know that there are only like 300 that made it to the U.S. I can't find anywhere that gives a real answer as to what its worth. I have the original box and manual as well. The bad...it was owned by a cop and he used it in his patrol car so the stock and foregrip have some rub marks, not very bad just enough to make it not in perfect condition. It also has some (maybe size of a penny) light rust on the oval shaped compensator. Thanks for any and all input.