CDNN is a large gun seler in Texas. They will sell to everyone at "wholesale" pricing, and then ship to your local FFL dealer. You can usually avoid paying sales tax, by paying CDNN with a credit card.
More importantly, they often have special deals on SOME new guns at very low prices. I don't know the HOW's or WHY's, but they buy overstocks and discontinued items, and then sell as great bargains. They mail out an interesting catalog every quarter; or you can read the catalog on-line.
Maybe they are "THE T-J MAX" of guns?
JERRY