my guess is that they are in Mexico.
If not, they're in rented storage lockers near federal office buildings, or maybe just stored in the basement. They're just laying low until this little flap blows over, and then they start walking again.
Another possibility is that the 2000+ weapons, made by legal purchase because of federal fiat, have also been walked to elsewhere in Central America to show fraternal solidarity with comrade Huge-o Chavez. On large transactions like this, 90% of the items are intended for the CIA, with other agencies buying in to provide cover.
If the feds can't restart this program, they'll just let all the badges in on this scam "walk" one or two home with them as a well-deserved bonus. After all, these are legally-purchased weapons (as long as they stay in the US), due to the on-the-spot permission they gave. They are not on any hotlist as stolen or contraband.