AI actor_variant - delta4907's H2 elite minor
weapon - CMT covenant carbine
As the title says, I changed the elite to use a carbine instead of the plasma rifle. But when he spawns, he's using the basic stock plasma rifle. I have a stock (original) elite using a different carbine, and it works fine. Whatever I did/didn't do to make it work, I can't remember. I don't mind if it ends up just holding it 1 handed like a plasma rifle, as long as it uses the correct weapon.

That has to do with your third person animations, I think. It's hard to explain but the 'weapon label' your carbine has is likely set to something that the elite's third person animations are not made for.

IE if you wanted a stock elite to hold a sniper rifle, then you would have to change it's weapon label to something like 'plasma rifle' or 'needler,' and then the elite would hold the weapon with one hand. That is, of course, unless you have your own third person animations implemented.