Good deal...
Mk11--A further thought: Firstly, Brian P. is quite right about dealers. They are quick-and-easy, and costly.
Probably the best way for you to sell your own firearm, is to go to a gun show with the firearm in question, and a sign announcing what you have for sale. (If it's a long-arm, the easiest way is to put the firearm on a sling, and mount the sign on a stick. Sling over your shoulder, stick in the muzzle. Print clearly. Handguns are best handled in a shoulder bag, with the "for sale" sign attached to same. It's more awkward but it works.) Walk around with the firearm, and you will get inquiries. Ignore the dealers' inquiries--politely, of course--and concentrate on the inquiries from others who are there walking around. (80% of the inquiries will just be tire-kickers, of course, but the other 20% will actually be interested in looking at, handling, and perhaps buying, your firearm.)
Yes, it's tedious. And you may have to take the firearm to more than one gun show (I fail to see a problem with just having to go to another gun show!) And there will be dumb questions which you'll have to answer politely, and with a smile. Eventually you WILL get an offer you like. You sell the firearm for cash, with whatever documentation is comfortable for you and the buyer.
Of course, this presumes that you've already done your homework on the firearm in question. There is no substitute for doing that durn homework.