I hope I am posting this in the right place.  I took the four position collapsible stock, buffer tube, and H buffer off my Colt LE6920.  I'm thinking about getting rid of it but have no idea what a fair price would be.  It's in good to excellent condition and had around 1000 rounds fired in front of it.  If I sell it, I will include the buffer spring castle nut and plate as well.  Can anyone help me out to what to ask for price wise or expect in trade value?
BTW.. I did a search in the EE already.

Find out what that would go for new, and knock of 15 to 20% for a ballpark.  

Not sure about Colt, but a new RRA unit like that is $70.  You could maybe get $50-60 shipped for it.  So whatever the Colt assembly costs new, shave a few bucks off that price and see what happens.  

You could probabl get an easy $100 for the assembly.  I'd list it for $130 and then knock $10 bucks off at a time if it wasn't selling.

ETA:  www.ar15.com/forums/topic.html?b=7&f=125&t=287967

Thanks for the replies Fenian and Corporal Chaos.  Your help is greatly appreciated.  I wonder why the EE post never popped up on my search for Colt Stocks.  I guess I need to get off my rear and pay for my Team Member status.

Ive seen them go for $150-$200 new... You should be able to get $100-$125 for it...