Constructed from tan canvas with leather reinforcement at the bottom corners, this backpack was a companion piece for the scarce Johnson Light Machine Gun, configured to hold 12 magazines (240 rounds). The origin of the pack is unconfirmed, although it is believed to have been possibly made for the U.S. 1st Special Service Force, as it shows some slight signs of period use. No markings are present, with a pair of snap closures securing the top flap, canvas dividers to keep the magazines protected and vertically oriented, and a set of four straps to secure at the front and rear of a soldier's web belt.