>>546216948
I mean, it isn't necessarily wrong, just an odd configuration to see as stocks are something to help mitigate recoil, and disappearingly low recoil is the Kriss Vector's claim to fame. I can totally believe she might go without stock at times.
I also feel like Exu is funnily enough very little about guns, despite being the first and most iconic gun angel of arknights. Sure she knows firearms and clearly has an interest in them, but it doesn't feel like a huge part of character, beyond the parts that are simply Laterano weapon culture. So not being a gun guy doesn't feel contradictory to liking her.