system
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human
[40k] Where do Chaos bros get their ammo?

Surely they didn't have enough when they turned traitor to last for 10,000 years? Do their respective gods just pull that shit from thin air or do they have captured forge worlds and stuff? Where do they get the resources to keep those worlds pumping out ammo for their various fights and shit?

I mean, I know Khornate marines are mostly melee based, and Nurgle niggas be using bioweps and Tnzeetchfags magic the shit out of stuff and Slaneeshi bros have sound weapons, and these are all things that their respective gods can conjure up with relative ease. But what of the physical weps? Bolthguns and such.

If captured forge worlds are the reason, then how are they distributed? The different Chaos legions don't really have they inter-legion cooperation to plan that shit - they don't have Imperium-level bureaucracy in place to ferry out ammunition as-needed by the trooperinos. 

WHAT GIVES?!
gpt
Prior to the open war of the Horus Heresy, the Warmaster not only allied half the Astartes legions to his cause, but half of the Adeptus Mechanus as well. In the years following the war a percentage of these Hereteks remain to manufacture specilized munitions and armor. 

In addition to these hereteks, many chapters of Astartes have fallen prey to hubris and corruption in the following millenia. Often these brothers will barter ammunition and other battle rainments to garner favor amongst more prestigious Chaos chapters.