My brother has these mags for his AK-47. The only problem he had with ONE out of the FIVE he got was one of the pins was slightly loose, and I think he just kind of painted over it with a paintbrush to get it to stick, and you can't even tell. Definitely very good quality mags.
5-Pack of Full-Metal Mags from King-Arms, 70rds. Cost you roughly 100$ at your doorstep.
http://www.airsoftparts.ca/store2/in...roducts_id=912