Ok, heres the follow-up to BRod_01's findings.
Go to Megabuilding H6. Location here:
View attachment 11153405
If you have not already done the gig: hacking the hacker, you will have to clear out the interior of 6th street gangers.
Container A is here:
View attachment 11153411
Container A contents at level 31 on patch 1.1:
View attachment 11153414
Container B location is here:
View attachment 11153417
Container B contents at level 31 on patch 1.1:
View attachment 11153420
These should both be randomly generated items that can vary from rare to legendary quality, scale to player level and spawn with 0 to max sockets dependent on rarity tier. Please note that container B spawned an epic DB-4 Igla for me on the same character in patch 1.06, so this may be a static container but I have no way to verify this now.
If posting screenshots for verification, please also state your character level and the game version on which you are checking these containers as higher rarity tiers have a minimum level requirement to spawn (or at least, they did have one prior to patch 1.1).
I am going to repeat this on my level 50 character as soon as I can find a save before I looted the place.