It's not exactly what you are asking for but I run an entire textures/effects/skins package on my coop server that does what you want and a ton more. The base texture package is a bit more than 100MB but on a fast redirect you get that file pretty quick. What it gives you is beautifully reskinned weapons, pickups, and decorations that are interactive. Wall sconces can be shot off their base, signs and statues destroyed, trees burned, etc. The full texture package is north of 700MB and I'm slowly adding things once they are stable in the base setup.
There are some good weapon retextures but not to the level that LightningHunter did for the Unreal stuff here: https://www.moddb.com/mods/high-resolution-unreal-skins
Look at this detail on the rocket launcher:
He was gracious enough to let me rip out the textures and downconvert them to a more online-usable level. This is what needs to be done for the UT weapons. Trust me, it's SO worth it. Someone could make a really good total package like my coop one and do it for UT servers pretty easily. I've done all the heavy lifting aside from the UT weapon skins. It makes for a beast of a primary download but totally worth it once you are in-game.
Anyhow if you are wanting a plug-and-play solution I don't know of a high level version. You'll likely need to make one yourself if you want the very best product.