[Paine in the Neck]

Two of them have also been to Syria.

No surprise. I'm betting the guns they used also came from Syria - after first being shipped from Benghazi.

[Boogieman]

Who knows? They could have gotten them by an even more roundabout route:

Arizona gun shop > Mexican Cartels > ATF > CIA > Libyan “rebels” > Syrian “rebels” > French terrorists