I hate to sound like a complete idiot but I JUST got a T9 today, the only problem is that the stock just slides out, I tried searching for another thread that covered this but no luck :/ can anyone help a newb out?
I had to tweak my stock a bit to get mine to stay in. The hole that the pin locks into had to be opened up just a touch.
Same, I just used a knife tip to carve it a bit deeper. On the off chance you are talking about the stock sliding backwards off the main shaft. It can be replaced with any standard stock. I use a Magpull stock.