Hey all-
I came across this cactus at a local garden center and just had to buy it. It didn't have a tag or any kind of identification. It seems to be some kind of mammillaria, but I was hoping someone here might know the species. It was among some M. spinosissima that were labelled but it looks quite a bit different. It was a foolish purchase, but I had to go with my gut!
It's 11cm x 22cm.
Any ideas?

Unknown Mammillaria Image 1
Unknown Mammillaria Image 2
Unknown Mammillaria Image 3

Thanks in advance!