We have an A&K m60 down here.
There are some issues with the mofset so I heard, but the Wolfpack team member who sold it to us, just by-passed it, and he said that A&K didn't really make a repair part at the time for it.
Like many clones or non-high end AEGs, it does come with a not so durable hop up. Replacing isn't to hard though, and our is still a very solid gun.