Saab Bofors Dynamics CBJ-MS
Encyclopedia
The Saab Bofors Dynamics CBJ-MS is a Personal defense weapon
/Submachine gun
manufactured by Saab Bofors Dynamics
for Sweden
. It is chambered for both 6.5×25 CBJ-MS and 9×19mm Luger/Parabellum cartridges.
and light support weapon
(LSW). It is also capable of being field-converted to fire one of two types of ammunition
. For the purely military role, the CBJ MS fires a new 6.5 × 25 mm CBJ cartridge
; but by simply changing the barrel
, it can fire 9 × 19 mm Parabellum ammunition for police, training and other operations. The 6.5 × 25 mm CBJ cartridge has the same overall dimensions as the 9 × 19 mm cartridge and generates the same level of firing impulse. The projectile
is a tungsten
insert held in a plastic sabot
, fired at a high muzzle velocity
(815 m/s) with the ability to defeat current and future body armours. It is claimed to be effective against lightly armoured vehicles such as armoured personnel carriers (APCs). Advantages claimed for the 6.5 × 25 mm CBJ cartridge include a high impact velocity, a high hit probability due to the flat trajectory
, high energy transfer to the target, and low levels of barrel wear and corrosion. The cartridge case is aluminium. Each 6.5 × 25 mm CBJ cartridge weighs 4.5 g and has an overall length of 29.7 mm. The projectile weight is 2 g. The combat range of the cartridge is stated to be up to 400 m.
Personal defense weapon
A personal defense weapon is a compact semi-automatic or fully automatic firearm similar in most respects to a submachine gun, but firing an armor-piercing rifle round, giving a PDW better range, accuracy and armor-penetrating capability than submachine guns, which fire pistol-caliber cartridges...
/Submachine gun
Submachine gun
A submachine gun is an automatic carbine, designed to fire pistol cartridges. It combines the automatic fire of a machine gun with the cartridge of a pistol. The submachine gun was invented during World War I , but the apex of its use was during World War II when millions of the weapon type were...
manufactured by Saab Bofors Dynamics
Saab Bofors Dynamics
Saab Bofors Dynamics, located in Karlskoga and Linköping, Sweden, is a subsidiary of Saab AB that specializes in military materiel such as missile systems and anti-tank systems....
for Sweden
Sweden
Sweden , officially the Kingdom of Sweden , is a Nordic country on the Scandinavian Peninsula in Northern Europe. Sweden borders with Norway and Finland and is connected to Denmark by a bridge-tunnel across the Öresund....
. It is chambered for both 6.5×25 CBJ-MS and 9×19mm Luger/Parabellum cartridges.
Development
The Saab Bofors CBJ MS Personal-Defence Weapon (PDW) was first shown in August 2000. It is an unusual weapon in several respects, not least because it is meant to fulfil the roles of PDW, assault weaponAssault weapon
Assault weapon is a non-technical term referring to any of a broad category of firearms with certain features, including some semiautomatic rifles, some pistols, and some shotguns. There are a variety of different statutory definitions of assault weapons in local, state, and federal laws in the...
and light support weapon
Squad automatic weapon
A squad automatic weapon is a weapon used to give infantry squads or sections a portable source of automatic firepower. Weapons used in this role are selective-fire rifles, usually fitted with a bipod and heavier barrel to perform as Light machine guns...
(LSW). It is also capable of being field-converted to fire one of two types of ammunition
Ammunition
Ammunition is a generic term derived from the French language la munition which embraced all material used for war , but which in time came to refer specifically to gunpowder and artillery. The collective term for all types of ammunition is munitions...
. For the purely military role, the CBJ MS fires a new 6.5 × 25 mm CBJ cartridge
Cartridge (firearms)
A cartridge, also called a round, packages the bullet, gunpowder and primer into a single metallic case precisely made to fit the firing chamber of a firearm. The primer is a small charge of impact-sensitive chemical that may be located at the center of the case head or at its rim . Electrically...
; but by simply changing the barrel
Gun barrel
A gun barrel is the tube, usually metal, through which a controlled explosion or rapid expansion of gases are released in order to propel a projectile out of the end at a high velocity....
, it can fire 9 × 19 mm Parabellum ammunition for police, training and other operations. The 6.5 × 25 mm CBJ cartridge has the same overall dimensions as the 9 × 19 mm cartridge and generates the same level of firing impulse. The projectile
Projectile
A projectile is any object projected into space by the exertion of a force. Although a thrown baseball is technically a projectile too, the term more commonly refers to a weapon....
is a tungsten
Tungsten
Tungsten , also known as wolfram , is a chemical element with the chemical symbol W and atomic number 74.A hard, rare metal under standard conditions when uncombined, tungsten is found naturally on Earth only in chemical compounds. It was identified as a new element in 1781, and first isolated as...
insert held in a plastic sabot
Sabot
A sabot is a device used in a firearm or cannon to fire a projectile, such as a bullet, that is smaller than the bore diameter, or which must be held in a precise position. The term is also applied to a battery stub case, a device used similarly to make a small electrical battery usable in a...
, fired at a high muzzle velocity
Muzzle velocity
Muzzle velocity is the speed a projectile has at the moment it leaves the muzzle of the gun. Muzzle velocities range from approximately to in black powder muskets , to more than in modern rifles with high-performance cartridges such as the .220 Swift and .204 Ruger, all the way to for tank guns...
(815 m/s) with the ability to defeat current and future body armours. It is claimed to be effective against lightly armoured vehicles such as armoured personnel carriers (APCs). Advantages claimed for the 6.5 × 25 mm CBJ cartridge include a high impact velocity, a high hit probability due to the flat trajectory
Trajectory
A trajectory is the path that a moving object follows through space as a function of time. The object might be a projectile or a satellite, for example. It thus includes the meaning of orbit—the path of a planet, an asteroid or a comet as it travels around a central mass...
, high energy transfer to the target, and low levels of barrel wear and corrosion. The cartridge case is aluminium. Each 6.5 × 25 mm CBJ cartridge weighs 4.5 g and has an overall length of 29.7 mm. The projectile weight is 2 g. The combat range of the cartridge is stated to be up to 400 m.