http://skyrim.nexusmods.com/mods/37328
Swap between different weapon/armor models on the fly via an MCMenu.
Store your favorite Weapon/Armor model mods in a single esp
Have better compatibility than most traditional weapon/armor mods.
The code's pretty simple, and I left the source code open.
Feel free to look at it, copy it, or whatever. I think more weapon/armor model mods should allow toggling/swapping of their art files via MCMenu.
Because it's more flexible and has better compatibility and all that good stuff.