CBJ-MS is a Swedish made personal defense weapon / submachine gun. Designed and manufactured by Swedish weapon developer CBJ Tech AB, and was also manufactured by Saab Bofors Dynamics. It can be chambered for both 9×19mm and higher-velocity 6.5×25mm CBJ cartridges via simple barrel changes.
Quite similar to the Uzi for having open bolt mechanism and magazine inserted to the grip. The gun features a top-mounted Picatinny rail for mounting optics, a progressive trigger for semi- and fully automatic fire, a collapsing wire stock, a grip safety, a threaded barrel, and a hollow foregrip which can be used to hold a spare magazine. Feed system comes in 20 or 30-round detachable box magazine and 100-round drum one.
This tag implicates submachine_gun (learn more).