Where are the pickup weapons in Battlefield 4?

I've played a good bit of Battlefield 4, and used a number of the pickup weapons to good effect, but when browsing through the weapons list, I came across 2 I've never seen: the USAS-12 FLIR and the AMR-2 CQB. I've found the standard version of the USAS-12 on a number of maps, and the standard and MID versions of the AMR-2, but not these.

Can anyone tell me on which multiplayer maps and where they are located? Or provide a reference that tells where all (multiplayer) pickup weapons are in-game?

Solution 1:

USAS-12 FLIR

The USAS-12 FLIR is located in the middle of Operation Locker, in most game modes objective C: Panopticon. This is were the tower is. The USAS is located on the lower level, on the west side of the tower. I've made a small demonstration video (Vid-1) in which you can see it exacts whereabouts.

Vid-1: The location of the USAS-12 FLIR on Operation Locker and a little demonstration of its power:

AMR-2 CQB

I believe the AMR-2 CQB is on Pearl Market, on the top-level of the central building block, where in most gamemodes an objective is located.