Technical help required! I removed the stock of my ACM Thompson, but when I came to put it back on, the metal piece inside the gun where the shorter of the two screws fits fell off and is rattling around inside the gun. 
If anyone can describe in detail (pics would be nice!) how to strip it down in order to get this bit out, then I'd be eternally grateful.
You've got nothing to ein, zwei, drei, vier
PM me your number mate and Ill describe it to yah
Did exactly the same myself. Here's what you need to do:
At the rear of the body, just where it meets the stock there is a button.
Press this, grasp the top of the body and slide firmly forward
The body will come into two parts and you can see the pesky little metal bolt head.
I recommend fixing it in place with some elec tape.
The body just slides back together but be careful of those sharp metal edges!
I'll post a link to the full stripping guide ASAP
Thanks.
You've got nothing to ein, zwei, drei, vier
Tug Wilson to the rescue! Together we managed to get it stripped down, and Tug also used his skills to tweak my wooden kit ready for fitting.
Cheers matey. 
You've got nothing to ein, zwei, drei, vier