Step 1: Clean the Surface
AK-47s are notoriously dirty guns. In order for a successful vinyl wrap to bond with the surface of the magazine, it needs to be thoroughly cleaned. Use a gun-specific degreaser and a small brush to scrub all the gun oil away. Sometimes more than one round of cleaning is required to get the job done.
Use rubbing alcohol to remove any standing moisture. This is a good last step but remember that alcohol alone isn't strong enough to cut through grease. Use a lint-free cloth or let air dry.
Step 2: Peel and Stick
The mag skins will contain two pieces, one for each side of the magazine. When we refer to the left or right side of the mag, we're using the orientation if the magazine was loaded in the rifle and aiming forward. Install the left side first by peeling the piece and positioning centered on the mag. Line it up using the bottom edge or lip of the mag, depending on the brand. Work the material from one end to the other, and then outward over the sides.
Install the right side afterward, following the same technique. The sides of the vinyl contain relief cuts so that installing the material on the curved sides will be easier to do. Overlap the vinyl along the front and back edges of the mag and press with your fingers. If the piece is crooked or not looking right, it's perfectly fine to peel it back and try again.
Step 3: Heat and Conform
Use a heating device, such as a heat gun or blow dryer, and use your fingers to work the vinyl into the ribs, crevices, and ridges of the surface in order for the vinyl to conform to that shape. A hand squeegee or other hard plastic object can be used to run through the sides of these ribs and press the vinyl along the edges for the best look.
If an air bubble reveals itself, poke it using the tip of a hobby knife to let the air out, and then heat and press to seal it up. The heat activates the bonding agent and sets the vinyl for the long haul. Spend a few minutes running heat up and down and over the entire magazine, pressing with your fingers to ensure maximum adhesion. Once cool, the magazine is ready to lock and load!