Yeah, this isn't a big issue, I just noticed it and wanted to report it. I play as TR, so it might be TR specific? No idea. When I have the Thumper out, and I have Disruptepr Ammunition equipped, the cylinder that should hold the ammunition does not do the rotation animation between shots like the regular cylinder does. Incendiary works fine, it's just the Disruptor ammo's model that is wonky.