PAM submachine gun
| PAM submachine gun | |
|---|---|
| A PAM-1 located at the Museo de Armas, Buenos Aires, Argentina. | |
| Type | Submachine gun | 
| Place of origin | Argentina | 
| Service history | |
| In service | 1955-90s | 
| Wars | Falklands War | 
| Production history | |
| Designed | 1954 | 
| Manufacturer | Fábrica Militar de Armas Portátiles | 
| Developed from | M3 submachine gun | 
| Produced | 1955-1972 | 
| No. built | 47,000 | 
| Specifications | |
| Mass | 7.27 pounds (3.30 kg) | 
| Length | 725 millimetres (28.5 in) | 
| Barrel length | 200 millimetres (7.9 in) | 
| Cartridge | 9×19mm | 
| Rate of fire | 450 rounds/min | 
| Feed system | Detachable double-feed box magazine | 
| Sights | Rear flip-type sight with 50m and 100m settings | 
The Pistola Ametralladora (English: "machine gun" or "machine pistol"), often referred to as the PAM submachine gun, was a series of two Argentine submachine guns (the PAM-1 and PAM-2) that were licensed variants of the American M3A1 'Grease Gun'. The main difference between the PAM series and the M3A1 was that the PAM was chambered in 9×19mm Parabellum instead of the M3's .45 ACP. The PAM-1 began production in 1955 and remained in service with the Argentine Armed Forces through the Falklands War and the 90s before being mostly removed from service and sold on the civilian market as a semi-automatic conversion. The PAM-2 was an improved version of the PAM-1 that mostly addressed the inadequate safety originating from the original M3.