Question: are all ak mags the same?
Answer: Magazines for AK/AKM/RPK family are fully interchangeable as long as the caliber stays the same- 7.62 mm M43. The high capacity magazines originally issued for the RPK LMG can be used with AK/AKM rifles and AK 30-rd mags with the RPK. Interchangeability is also valid among the AK-74 family.