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{{Infobox weapon
{{Infobox weapon
| name = CBJ MS
| name = CBJ-MS
| image = 650cbj ms.jpg
| image =
| image_size = 300
| image_size = 300
| caption = A CBJ MS with a 30-round magazine
| caption = CBJ-MS with extended stock.
| origin = Sweden
| origin = [[Sweden]]
| type = [[Submachine gun]]<br />[[Personal defense weapon]]
| type = [[Submachine gun]]<br />[[Personal defense weapon]]
<!-- Type selection -->
<!-- Type selection -->
Line 10: Line 10:
<!-- Service history -->
<!-- Service history -->
| service =
| service =
| used_by = See [[#Users|''Users'']]
| used_by =
| wars =
| wars =
<!-- Production history -->
<!-- Production history -->
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<!-- Ranged weapon specifications -->
<!-- Ranged weapon specifications -->
| cartridge = [[6.5×25mm CBJ]]<br />[[9×19mm Parabellum]]
| cartridge = [[6.5×25mm CBJ]]<br />[[9×19mm Parabellum]]
| action = [[Open bolt]], [[Select fire]] ([[Trigger_(firearms)#Progressive_trigger|Progressive Trigger]]), [[Blowback (firearms)|Blowback]] Operated. <ref name="Janes">[https://archive.is/20130103140200/http://www.janes.com/articles/Janes-Infantry-Weapons/Saab-Bofors-Dynamics-CBJ-MS-personal-defence-weapon-Sweden.html Saab Bofors Dynamics CBJ MS personal-defence weapon (Sweden), Sub-machine guns] </ref>
| action = [[Open bolt]], [[Select fire]] ([[Trigger_(firearms)#Progressive_trigger|Progressive Trigger]]), [[Blowback (firearms)|Blowback]] Operated. <ref name="Janes">[https://archive.today/20130103140200/http://www.janes.com/articles/Janes-Infantry-Weapons/Saab-Bofors-Dynamics-CBJ-MS-personal-defence-weapon-Sweden.html Saab Bofors Dynamics CBJ MS personal-defence weapon (Sweden), Sub-machine guns] </ref>
| rate = 700 rounds/min
| rate = 700 rounds/min
| velocity = {{cvt|2723|ft/s|m/s}}
| velocity = {{cvt|2723|ft/s|m/s}}
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}}
}}


The '''Saab Bofors Dynamics CBJ MS''' is a [[personal defense weapon]]/[[submachine gun]] designed and manufactured by CBJ Tech AB; it was also manufactured by [[Saab Bofors Dynamics]]. It can be chambered for both [[6.5×25mm CBJ]] and [[9×19mm Parabellum]] cartridges.
The '''Saab Bofors Dynamics CBJ-MS''' is a [[personal defense weapon]]/[[submachine gun]] designed and manufactured by [[Sweden|Swedish]] weapon developer CBJ Tech [[Aktiebolag|AB]], and was also manufactured by [[Saab Bofors Dynamics]]. It can be chambered for both [[6.5×25mm CBJ]] and [[9×19mm Parabellum]] cartridges via simple [[gun barrel|barrel]] changes.

{{As of|2008}}, the CBJ-MS was supposedly in its final phases of development{{citation needed|date=December 2023}} but no production date had been announced.


==Development==
==Development==
The CBJ MS was first shown in August 2000. It is an unusual weapon in several respects, not least because it is meant to fulfill the roles of [[personal defense weapon]], [[assault rifle]] and, with the addition of a proprietary bipod and 100-round drum magazine, [[squad automatic weapon]].
The CBJ-MS ("Modular System"<ref>{{cite web|url=http://www.cbjtech.com/small-arms/|title=CJB Tech - Small Arms|accessdate=2020-11-07}}</ref>) was first shown in August 2000. It is an unusual weapon in several respects, not the least because it is meant to fulfill the roles of a [[personal defense weapon]], an [[assault rifle]] and (with the addition of a proprietary [[bipod]] and 100-round [[drum magazine]]) a [[squad automatic weapon]].


The gun features a top-mounted [[Picatinny rail]] for mounting optics, a progressive trigger for semi-and full 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.
The gun features a top-mounted [[Picatinny rail]] for mounting [[optical sight|optics]], a [[trigger (firearms)#Progressive/staged trigger|progressive trigger]] for [[semi-automatic firearm|semi-]] and [[automatic firearm|fully automatic]] fire, a collapsing wire [[buttstock|stock]], a [[pistol grip|grip]] [[safety (firearms)|safety]], a [[threading (manufacturing)|threaded]] barrel, and a hollow [[foregrip]] which can be used to hold a spare [[magazine (firearms)|magazine]].


The CBJ MS is capable of being field-converted to fire one of two types of [[ammunition]]. For the purely military role, the weapon fires the proprietary [[6.5×25mm CBJ]] cartridge; but by simply changing the [[Gun barrel|barrel]], it can fire [[9×19mm Parabellum]] ammunition for police, training and other operations. The 6.5×25mm CBJ cartridge has the same overall dimensions as the 9×19mm cartridge and generates the same level of firing impulse.
The CBJ-MS is capable of being field-converted to fire one of two types of [[ammunition]]. For the purely military role, the weapon fires the proprietary [[6.5×25mm CBJ]] PDW cartridge; but by simply changing the barrel, it can fire [[9×19mm Parabellum]] ammunition for [[law enforcement]], training and other [[security]] operations. The 6.5×25mm CBJ cartridge has the same overall dimensions as the 9×19mm cartridge, can be used in the same [[magazine (firearms)|magazine]]s and generates the same level of [[recoil]].


The [[projectile]] is a [[tungsten]] insert held in a plastic [[sabot (firearms)|sabot]], fired at a high [[muzzle velocity]] ({{cvt|815|m/s|disp=comma}}) with the ability to defeat current and future body armours.
The [[projectile]] used by the 6.5×25mm CBJ can be a normal [[bullet|ball bullet]], but can also be a 4&nbsp;mm [[tungsten]] [[kinetic penetrator]] held inside a non-disintegrating plastic [[sabot (firearms)|sabot]], fired at a high [[muzzle velocity]] of {{cvt|815|m/s}} with the ability to defeat most contemporary [[body armour]]s. It is also claimed to be effective against light [[vehicle armor]]s on [[armoured personnel carrier]]s (APCs). Advantages claimed for the 6.5×25mm 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.


During trials, the 6.5×25mm CBJ round completely penetrated through the standard CRISAT vest at a range of {{convert|230|m}}. It is claimed that it is superior than the [[5.7x28mm FN]] and [[4.6×30mm HK]] round out of the [[FN P90]] and [[HK MP7]].
It is claimed to be effective against lightly armoured vehicles such as [[armoured personnel carrier]]s (APCs). Advantages claimed for the 6.5×25mm 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 6.5×25mm CBJ cartridge weighs {{convert|4.5|g}} and has an overall length of {{convert|29.7|mm}}. The projectile weight is {{convert|2|g}}. The combat range of the cartridge is stated to be up to {{convert|400|m}}.<ref name="Janes"/>
Current{{when|date=December 2023}} cartridge cases are being developed using aluminium. Each 6.5×25mm CBJ cartridge weighs {{convert|4.5|g}} and has an overall length of {{convert|29.7|mm}}. The projectile weight is {{convert|2|g}}. The [[effective range]] of the cartridge is stated to be up to {{convert|400|m}}.<ref name="Janes"/>

==Users==
* {{flag|Sweden}}
** [[Swedish Armed Forces]]
** [[Särskilda operationsgruppen]]
* {{flag|Venezuela}}


==References==
==References==
{{reflist}}
{{reflist}}



==External links==
==External links==
* [https://web.archive.org/web/20090308131211/http://world.guns.ru/smg/smg101-e.htm Modern Firearms Page]
* [https://web.archive.org/web/20090308131211/http://world.guns.ru/smg/smg101-e.htm Modern Firearms Page]
* [http://www.gotavapen.se/gota/cbj/cbj_syst.htm A new Weapon system from Sweden.]
* [http://www.gotavapen.se/gota/cbj/cbj_syst.htm A new Weapon system from Sweden.]
* [http://www.military-today.com/firearms/cbj_ms.htm Article title]{{dead link|date=December 2024|bot=medic}}{{cbignore|bot=medic}}
* https://www.quarryhs.co.uk/PDWs.htm


{{Personal defense weapons}}
{{Personal defense weapons}}

Latest revision as of 20:13, 22 December 2024

CBJ-MS
TypeSubmachine gun
Personal defense weapon
Place of originSweden
Production history
DesignerCarl Bertil Johansson
DesignedEarly 2000s
ManufacturerCBJ Tech AB
Saab Bofors Dynamics
Specifications (6.5×25mm CBJ chambering)
Mass2.8 kg (6.2 lb) (empty)
3.05 kg (6.7 lb) (loaded, 30-round magazine)
Length363 mm (14.3 in) (stock retracted)
565 mm (22.2 in) (stock extended)
Barrel length200 mm (7.9 in)
Width44 mm (1.7 in)
Height189 mm (7.4 in) (with 20-round magazine)
240 mm (9.4 in) (with 30-round magazine)
Cartridge6.5×25mm CBJ
9×19mm Parabellum
ActionOpen bolt, Select fire (Progressive Trigger), Blowback Operated. [1]
Rate of fire700 rounds/min
Muzzle velocity2,723 ft/s (830 m/s)
Effective firing range150 m (490 ft)
Maximum firing range400 m (1,300 ft)
Feed system20- or 30-round detachable box magazine
100-round detachable drum magazine
SightsAdjustable open iron sights
Optical sights (Picatinny rail)

The Saab Bofors Dynamics CBJ-MS is a 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 6.5×25mm CBJ and 9×19mm Parabellum cartridges via simple barrel changes.

As of 2008, the CBJ-MS was supposedly in its final phases of development[citation needed] but no production date had been announced.

Development

[edit]

The CBJ-MS ("Modular System"[2]) was first shown in August 2000. It is an unusual weapon in several respects, not the least because it is meant to fulfill the roles of a personal defense weapon, an assault rifle and (with the addition of a proprietary bipod and 100-round drum magazine) a squad automatic weapon.

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.

The CBJ-MS is capable of being field-converted to fire one of two types of ammunition. For the purely military role, the weapon fires the proprietary 6.5×25mm CBJ PDW cartridge; but by simply changing the barrel, it can fire 9×19mm Parabellum ammunition for law enforcement, training and other security operations. The 6.5×25mm CBJ cartridge has the same overall dimensions as the 9×19mm cartridge, can be used in the same magazines and generates the same level of recoil.

The projectile used by the 6.5×25mm CBJ can be a normal ball bullet, but can also be a 4 mm tungsten kinetic penetrator held inside a non-disintegrating plastic sabot, fired at a high muzzle velocity of 815 m/s (2,670 ft/s) with the ability to defeat most contemporary body armours. It is also claimed to be effective against light vehicle armors on armoured personnel carriers (APCs). Advantages claimed for the 6.5×25mm 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.

During trials, the 6.5×25mm CBJ round completely penetrated through the standard CRISAT vest at a range of 230 metres (750 ft). It is claimed that it is superior than the 5.7x28mm FN and 4.6×30mm HK round out of the FN P90 and HK MP7.

Current[when?] cartridge cases are being developed using aluminium. Each 6.5×25mm CBJ cartridge weighs 4.5 grams (0.16 oz) and has an overall length of 29.7 millimetres (1.17 in). The projectile weight is 2 grams (0.071 oz). The effective range of the cartridge is stated to be up to 400 metres (1,300 ft).[1]

References

[edit]
  1. ^ a b Saab Bofors Dynamics CBJ MS personal-defence weapon (Sweden), Sub-machine guns
  2. ^ "CJB Tech - Small Arms". Retrieved 2020-11-07.
[edit]
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