MP5K Broken body

[Manni]

The MP5k works great in fact ive been trying to replace parts but the problem is that i made a custom sliding stock for it and it was dropped funny (not by me) and broke the upper pin holder so the stock will no longer stay in properly. I have been looking for a Metal MP5K body but there really hard to find.

I was wondering if anyone knew of a way I could rig the current body to hold the pin until i get a new body for it as i want to use the gun but need to be able to put the rear pins in to use it. Also if anyone knows of somewhere that offers metal upper recievers for the TM mp5k (Heck id accept plastic/black although it would probable break again eventually).