62x39 or 5.45x39 ammo. It can be like, How is there not both of these calibers on the shelf when there is a war getting fought with it at this time?" Probably just answered my own concern, but would in all probability go with a five.56 AK in the meanwhile. https://knoxhrajq.losblogos.com/36783733/the-greatest-guide-to-5-45-x39-ammo-for-sale