As anybody who has done any research into their AK style rifle has found out, Romanian WASR-10 rifles are imported as single stack magazine capable rifles and then the importer machines out the magazine well to accept double stack magazines. This means that you can now insert your high capacity AK 47 magazine, but it also usually means that that magazine now wobbles side to side.
The reason for this is simple: They machined out a rifle made for low capacity magazines so that it would accept high capacity magazines. On AKM rifles made for high capacity magazines, there are "dimples" in the receiver that hold the magazine in place so that it does not wobble. Those dimples are missing on the WASR-10.
Don't panic! Just because our AK rifle doesn't have dimples doesn't mean we can't have high capacity magazines without wobble. The fix is just as simple as the reason it happens.
Take a look at your receiver. You don't even have to pull it apart like I did. (I was trying to clean up all the gook the factory leaves in these rifles. I'm still trying to this day.) See the steel plates on the side of the magwell?
Make sure that steel plate is clean. It's much easier to get clean than all the nooks and cracks. I recommend Goo Gone. It'll make getting the grease out pretty easy, but you can use what you like. (If you go with Goo Gone, pick up the original formula. The new stuff will strip the finish right off the metal.)
Once the grease and junk is gone, head to your local Wally World and pick up some J-B Weld cold welding compound. Don't get the quick-curing type, as the temperature resistance is too low.
Mix up a small batch according to instructions. (I only had to use about a thumbnail size blob of each component.) Once it is mixed - you can tell it's done because it turns from black and tan to steel grey - slop that stuff right on the steel plate inside the magazine well.
Don't worry about making it all pretty. The big concern is that you get enough built up so that the top of the mound of cold weld stuff is level with the lip of the magazine well. it will cure fully in about 15 hours, at which point you can test your magazine.
Now, my magazine wobble was fixed by doing this once. You may want to put less on one side and do both sides, it's up to you. Once the J-B Weld is cured, you can grind it down with a Dremel if you put too much on, and then you can paint it if you like.
Dec 2, 2013 - Still have this rifle. I have put thousands of rounds down the barrel, and the JB Weld is still working to stop magazine wobble. There is some slight finish wear on the magazines where they contact the JB in the rifle. After five years, I think that's a pretty minimal side effect for this "ghetto" fix.