I’ve added a new “Weapon Checklist” sheet which dynamically updates a pivot table as you check off weapons you’ve acquired - allowing you to see what you should aim to acquire at your next destination.
You will need to make a copy of the sheet - I do still have a lot of the “boring” weapons such as common handguns missing from locations so hopefully this will spur some suggestions to fill in what I’ve left out.
Hey, is this topic still active?
I found weapons not in your list, or maybe IOI made changes in freelancer.
In Chongqing, some of the rooftop guards carry Fusil G2 ARs (same location of guards carrying Tactical Bartoli 12G Shotguns).
In Marrakesh, street guards carry HX-10 SMGs (not HX-7)
I’ll check Marrakesh when I get a chance.
As for Chongqing, are you playing unmodded or with freelancer variations?
Speaking of Freelancer Variations and since I just played on Hantu Port, here’re some items you can grab there.
Sailor with bandaged head: Sedative Pills
Ship’s armory: Druzhina 34, Bartoli 12G Short, Fusil G1-4
Heavenly Guards: Bartoli 12G Short, HX-7, Shaska A33, Hackl 9S
Port Security: Tactical Bartoli 12G, Bartoli 75R
The ship’s armory has a workbench for adding a silencer to a Shaska A33, it may be the version you can add to the wall but I forgot to check this time.
No mods. Completely unmodded.
Also, things I found on Ambrose Island,
Some Militia Soldiers above the ruins carry Tactical Bartoli 12G Shotguns.
Various Militia Soldiers around the map also carry HX-10 SMGs.
Lastly, (not completely 100% with this one), I ran around the map looking for the DAK X2 (normal one, not the covert carried by Crest) and it seems it is only carried by Akka’s personal guard.
In Hawke’s Bay meanwhile (standard version):
Panic Room: Folding Knife, Fragmentation Grenade, Hackl 9S Covert
Locked cabinet near food storage: Folding Knife
Bodyguards: HX-7, Tactical Bartoli 12G, Fusil G1-4/C, Bartoli 75S, Bartoli 75R
Found another on Santa Fortuna…
Elite Guards (in the caves) carry Bartoli 75S Pistols
Did we get the folding knife in ambrose by Piombo and the one on the table by the guard having a meal on the walkway by the fashion store below the mansion?
Yes. 
Got another one on Ambrose.
Sawed-off Bartoli 12G Shotgun in a crate in the Pirates Base.
Unfortunately you can’t take that one home, which is why it isn’t listed.
…unless it has been ninja-fixed by IOI - check your inventory and see if it has a rarity now, I’m betting it won’t.
I see…
I didn’t notice if I had it brought back home…
I’ll check it when I run Ambrose again.