Hello, i have a pair of remington shotguns one 11-87 and one 870 both in bottomland camo from the mid to late 90s both have the original bottomland slings still on them. I have had a couple of guys wanting to buy the slings off me, ive kinda always been ito rifles and never paid much attention to whats desireable as far as shotgun accessories, what am i missing about these slings? I would think they dont wear out very often and as far as i know they were prbly standard equipment on most of these camo shotguns and im sure alot were made. What kind of money would they be going for? Thanks.