Thread: Selling a Colt AR15, what to do?

I'm going to sell my Colt AR15 but couple queries if anyone can please help. It is a Government A2 model in mint condition. I replaced the receiver with a RRA flattop to modernise it and barrel is 18".

What's a fair price to ask for it?
Do guns sell more attractively as E cat or A cat (it is currently E)?
Should I return it to original configuration (ie Colt carry handle receiver as a collector rifle or sell as is as a shooter)?
Any reputable dealers who sell on behalf?