From a quick look at this pile of guns, they didn’t recover much. I see Poly Chokes, single shot shotguns and more junk. The people who turned them in probably made a good sale.
That was one of the last series of "buybacks" conducted by the commies in Phoenix before the law became active which says they can't destroy guns they take but must return them to owners or sell them back into the community through FFLs. Now some "forfeiture" reform and we'll be in good shape.
I believe marktwain and others were there defending freedom and common sense and probably bought up most of the ones of any value before they were turned in. (Plus maybe the photo was taken after the "custodians" have had their pickings from the take).
You wouldn't BELIEVE all the weeping and gnashing of teeth about how the new law prevented "buybacks". It didn't, and anyone purchasing the guns would have got them from an FFL and had to undergo a background check, the Mecca of the anti-rights (except for theirs) left. Thus, there would still be a reason to do "buybacks" if safety were the goal rather than disarming the public and getting some nice guns for free.