If you're really looking to liquidate your inventory, you need to price the items at 50-75% off retail. If you've done custom work to the guns, you can ask a bit more, but otherwise, your guns will not sell. To be honest, I've looked your ad over several times and seen things I would like to buy, but I was scared away by the prices on them.
As far as bulk goes, you're going to have to find the right buyer that wants all those things or thinks that they can resell them for a profit. Perhaps AA and Backpage is too narrow a market. You might want to take it to a place where you can get more attention. This carries the extra cost of shipping, you'll have the items out of your hair and cash in your pocket.
Good luck with your sell, my friend.
