I have a Vulcan 50bmg for sale for 1300. I have had it for about 3 years and it is in good shape. I have probably fired about 30 rounds down it since new.
If you have dealt with these the stock fit is tight all the way down the stock up against the barrel and the trigger pull is heavier than anything I have ever dealt with.
I took it to my gunsmith and had barrel free floated and the receiver was glassbedded. I also had the trigger worked on and it is a nice light pull (not super light, i cant give a weight but would say about like my remington 700 is).
The reason I am selling it is that I am getting married December 15th and have a few things to pay off.