The revocation came after Embody was detained by Belle Meade police in 2010 while walking with a .44 caliber black powder revolver in his hand. He was detained in 2009 while walking in Radnor Lake State Park with an AK-47-style pistol.
(emphasis added)
Yes, there is such a thing. Take the folding stock off a short-barreled AK-47 and you have a pistol (if it is properly registered as a pistol).