Even as a big guy, the M324 seems too long for most games. I wanted to cut the barrel and hand guard down, to make it more of a scout/recon rifle.
Step 1: Tools
For tools, I used my Dremel, a hack saw, a small Phillips screw driver, a few hex wrenches (they came with the gun when I bought it) and a Gerber multitool.
If I had to, I could have done it with a Phillips, small flathead screwdriver, the hex wrenches and the hacksaw, so don't think you need to use all this stuff.
Also, having a shop cat helps. Sometimes.
Step 2: Dropping Some Weight
I chose to remove one of the weights, and I wanted to keep the bottom one. I think this will make it less top heavy, and more stable when being carried. Also, it will keep a little heft, which should help keep it steady when firing.
If the weights are loose and rattle or move, some electrical tape should keep them in place.
Step 4: Do not to be forgettings!
When taking the stock apart, it's very important to remember what screws came from which hole. They are almost all different sizes and can damage the gun if put back wrong. Also, these metal parts can fall out and might be lost in a couch and could maybe make you look for an hour before you finally find the lost one. Just sayin'.
Make sure to charge your Dremel or have a hack saw, otherwise you might work for an hour and only accomplish this... mess.