Data Quality85%
MASS(Military Archive Scoring System)
ⓘ Regardless of era, the same scoring system applies to all units in the machine pistols category.
01 / Overview
BSA Welgun
Category
Country
Prime contractor
Production
1943–1943
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
MACHINE PISTOLS · WORLD WAR II
34
PERFORMANCE/PRICE
78
UNIT COST (2025 USD)
—
ⓘ Performance/Price and MASS score are computed across all units in the machine pistols category, regardless of era.
02 / Specs & Design
◎General5MOD.5
- First Production Year1942
- DesignerF.T. Bridgman
- Weight (Empty)3.1 kg
- Currently In ServiceNo
- Notable UsersUnited Kingdom
◈Cartridge & Calibre6MOD.6
- Cartridge9×19mm Parabellum
- Calibre9 mm
- Case Length19 mm
- Calibre Class9mm
- RimfireNo
- Caseless AmmunitionNo
▣Operation6MOD.6
- Action TypeBlowback
- Fire Modesfully automatic
- Select FireNo
- Feed SystemDetachable Magazine
- Magazine Capacity32
- Cyclic Rate of Fire500
◇Ballistics1MOD.1
- Muzzle Velocity365 m/s
◆Barrel & Sights5MOD.5
- Barrel Length198.12 mm
- Sight TypeIron
- Optic RailNo
- Iron SightsYes
- Threaded BarrelNo
▤Construction5MOD.5
- Length (stock folded)410 mm
- Furniture Materialwood
- Folding / Collapsing StockYes
- Bullpup LayoutNo
- Ambidextrous ControlsNo
⬢Features5MOD.5
▲Production & Cost3MOD.3
- Production Start1943
- Production End1943
- Variants0
03 / History
SERVICE LIFESPANRetired
- 1939First deployment: World War II
- 1943Production started
83
years in service
0
years in production
0
countries operating
ⓘ 1 countries retired it.
05 / MASS Score
MACHINE PISTOLS RANKING Machine Pistols · World War II
MASS RANKINGSMASS ↗
201MACHINE PISTOLS34WORLD WAR II · MACHINE PISTOLS620UNITED KINGDOM · ALL WEAPONS34PERFORMANCE/PRICE · MACHINE PISTOLS
ⓘ Rankings are within theMachine Pistolscategory.
📖 TERMS ON THIS PAGE4terms
A type of firearm action where the breech is not locked and the cartridge case expands to seal the breech, using case expansion and pressure to retain gases.
A firearm feed system where ammunition is stored in a separate container (magazine) that can be removed and replaced, enabling rapid reloading.
A firearm stock that can be folded or collapsed to reduce overall length for storage or transport.
Adjustable metal aiming devices on firearms, consisting of a front post and rear notch, used without magnification.
These terms are listed automatically because they appear on this page.full encyclopedia →
📚 Sources