Greetings, I am trying to help a widow dispose of some of her late husbands things. One of them is a pre-ban (1992) Colt AR 15 sporter. I'm told it has less than a 1,000 rounds through it, and it looks consistent with that claim. Can anyone give me a value range for this beast? I'm told the pre-ban status might create more value. Hope this is an acceptable place to put this inquiry. Thanks in advance.