INA 953
Country: 
BrazilManufacturer: INA (Indústria Nacional de Armas)
«Madsen M/53 brasiliana»
Submachine gunBrazil1953Historic
Brazilian .45 ACP submachine gun produced under Madsen M/50 licence by INA of São Paulo from 1953, in service with the Brazilian Army until the 1970s.
Submachine gun//Brazil
ID — INA-953
Designation
INA 953
INA (Indústria Nacional de Armas)
Caliber
.45 ACP
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Data trust
- Reliability
- Unverified
- Sources
- Sources pending review
Identity
- Designation
- INA 953
- Alias
- Madsen M/53 brasiliana
- Manufacturer
- INA (Indústria Nacional de Armas)
- Country
- Brazil
- Year
- 1953
- Category
- Submachine gun
- Status
- Historic
Ballistics
- Caliber
- .45 ACP
- Muzzle velocity
- 280 m/s
- Rate of fire
- ~550 rpm
- Effective range
- 100 m
- Maximum range
- 200 m
Dimensions
- Barrel length
- 200 mm
- Overall length
- 530 / 800 mm
- Empty weight
- 3.2 kg
Mechanics
- Operating system
- Massa battente, otturatore aperto
- Bolt / action
- Otturatore non rotante (blowback)
Feed
- System
- Caricatore monofilare amovibile
- Standard capacity
- 32 rounds
Fire modes
SafeAuto
Historical profile
Developed by INA of São Paulo as a licensed copy of the Danish Madsen M/50, chambered in .45 ACP for commonality with the issued Colt 1911 pistol.
Open-bolt blowback operation, frame in two stamped shells joined by a pin; side-folding wire stock.
Produced in over 100,000 units, it was the main weapon of Brazilian NCOs and armoured crews until retirement in the 1970s.
Variants
INA 953INA 953 calibro 9 mm (prototipo)
Main users
Brazil (Army, Police)
Key components
- ●Stock — Shoulder rest.
- ●Receiver — Weapon body with internal mechanisms.
- ●Grip — Primary grip.
- ●Magazine — Cartridge feed.
- ●Barrel — Guides the projectile.
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