The CBJ-MS is a Swedish personal defense weapon/submachine gun developed by CBJ Tech AB and manufactured by Saab Bofors Dynamics.
History[]
The development of the weapon started in the 1980s, when Swedish arms designer Carl Bertil Johannson developed a submachine gun called the Viking. It was chosen by Jane's Infantry to be one of five submachine guns of many others to represent the U.S. section in August 1983. After a while, Johannson left the company, returning to Sweden to the Carl Gustaf gun factory.
Years later, CBJ Tech AB was founded as an independent company and the development of the weapon continued and became a completely new weapon system. This resulted in the CBJ-MS.
Design Details[]
Based on the Uzi, the CBJ-MS is a blowback-operated, select-fire weapon. Its rifled barrel can be changed out for maintenance or replacement with a barrel of the same or alternate caliber. Because of the dimensional similarities between the 6.5×25mm CBJ (developed specifically for the weapon) and 9×19mm Parabellum calibers, the weapon can use either one of them with only a barrel change.
The CBJ-MS uses an open bolt in standard form, but an alternate closed bolt system with a separate firing pin can be installed for closed bolt firing for higher first-shot accuracy. The weapon's firing mode is selected by trigger pull – A short pull for semi-automatic fire and a full-length pull for fully automatic fire.
The weapon also has an ambidextrous charging handle on the back of it, and does not move when it is fired.
Similarly to the Uzi, the magazine inserts into the pistol grip. The weapon also features a frontal grip that has a space for a spare magazine. Standard box magazines for the weapon come in 20- and 30-round capacities, but for special applications, there is also a 100-round drum.
The CBJ-MS is also equipped with adjustable open sights, along with a Picatinny rail on top of the receiver for installation of various optical sighting systems. It is also equipped with a retractable wire stock, and can be fitted with a detachable bipod accessory. The frontal grip can also be removed and replaced with other forms of auxiliary equipment such as laser pointers, flashlights, and so on. The weapon can also be equipped with Picatinny rails on the sides of the receiver for additional special purpose equipment.
Overall, the weapon is designed to be changed into one of three different configurations;
- PDW - Standard configuration with the wire stock retracted
- Light Assault Weapon (LAW) - Assault rifle-style configuration with the stock extended and an extra magazine in the frontal grip
- Light support weapon - Light machine gun-style configuration with the stock extended and the weapon is equipped with the bipod and 100-round drum magazine.
Gallery[]
