Make sure It's non- chlorinated brake and parts cleaner. It's usually a can with green on it while the regular has red. That's the way most cans are. You can buy it at Walmart or any parts store. Just be real careful and make sure it's says non+chlorinated on the can. The regular stuff can discolor some of the plastic parts or possibly ruin the finish. Just hang it up with a close hanger off a tree limb and spray it and it'll dissolve right off. Just make sure you hang it with the barrel pointed down that way all the brake cleaner and residue doesn't run into the stock and all that mess. Just get a couple of cans to make sure you have enough. Walmart's prices on it are a lot cheaper than the parts store so I suggest getting it there.I’ve used brake cleaner on a AK it’s worked for me
