This is definitely a feature that I've wanted for the longest time, and I'd like to help in implementing it. I'd like to try it out on the AR-15, but I want to see what I'm in for. From what I've read, I need to add that bit of code into the weapon file, and I also need to delete the arm mesh from the AR-15 model, correct? Is there any other thing that I'll need to do, such as editing bone names or recreating the animations from scratch? I already have Blender, but any other software suggestions would be appreciated.