RON L here = SERESURPLUS
I'm not htere to see it, How much Play are we talking about? If it's slight, under 1/8" or so, your Probably OK! I'm not trying to be insulting, do you know how to field strip this weapon? If you remove the Rear cover, the Recoil srping assemply and Remove the Bolt, with Piston, you should be able to tell if the tube is too loose and see if maybe you can slide it to the rear and get it tighter? Remeber AK designs, Like the WASR-10 are Prety tough, your not likely to break anything try to fix it, go to it and let us know, how it goes, we will try to help ya ll we can, OK?
PS: Could be why they let it go, but that's not meaning your in trouble with this, OK