Manufactured by IMI and imported by Action Arms as a Model B Carbine, this item was converted by PAWS Inc. into an open bolt submachine gun. The bolt block and barrel ring are present and unaltered, with a slotted bolt and shortened carbine barrel, and the PAWS marking added to the right side of the frame, concealed by the top cover. Post front and two-leaf peep rear sights, with non-ratcheting top cover, slotted bolt, "A F S" (A added) trigger housing, ribbed forearm and grip panels, and an underfolding stock. A section of velcro tape (loop side) is applied to the underside of the forearm.

Steel and alloy construction. Compatible with A; installs in lieu of the barrel collar.