Premise: AK-47 . An early development of the design was the AKS ( S -- Skladnoy or `` folding '' ) , which was equipped with an underfolding metal shoulder stock . A stock , also known as a shoulder stock , a buttstock , or simply a butt is a part of a rifle or other firearm , to which the barrel and firing mechanism are attached , that is held against one 's shoulder when firing the gun .
Hypothesis: AK-47 is a gun.
Label: ENTAILMENT