Firearms / Assault rifles / SIG SG-510

SIG SG-510

General Facts

  • TYPE
    Battle rifle

  • ORIGIN
    Switzerland

  • NICKNAMES
    AM-55 (development nickname)
    Sturmgewehr 57 / Stgw 57 (Swiss designation in German)
    Fusil d'assaut 57 / Fass 57 (Swiss designation in French)
    Fucile d'assalto 57 / Fass 57 (Swiss designation in Italian)

  • DESIGNED
    1950's

  • DESIGNER
    SIG

  • PRODUCTION
    1957 - 1983

  • PRODUCERS
    Switzerland - SIG

  • QUANTITY
    Over 600.000

  • UNIT COST
    Unknown

  • CHARACTERISTICS
    Highly accurate
    High production quality
    Very heavy
    Expensive

Introduction

The SG-510 is a battle rifle of Swiss origin. It was developed to replace the bolt-action rifles in Swiss service. The demand for a battle rifle with similar accuracy and range as a bolt-action rifle resulted in a large and heavy weapon with excellent accuracy and range.

Design

The SG-510 is based on several prototype designs developed in Germany during the later stages of World War 2, most notably the StG 45(M). The SG-510 is a heavy weapon fully made out of metal except for the stock. It features a roller delayed blowback mechanism, heavy barrel, bipod and recoil buffer is located in the stock. Iron sights with many range gradations are fitted.

Firepower

The SG-510 fires the Swiss 7.5x55mm round from a 24 round magazine. It is a select fire rifle with a relatively low rate of fire of 450 to 600 rpm. The export model is chambered in the 7.62x51mm NATO round and uses 20 or 30 round magazines. The Swiss army claims point targets can be engaged out to 600 meters when using a 4x scope.

Users

The SG-510 was adopted as the standard issue rifle for the Swiss military. In active service it has been replaced by the newer SG-550, but remains in reserve use. The export model was exported to Bolivia and Chile.

Variants

SG-510-1

The SG-510-1 is the Swiss version of the SG-510. It is better known as the Sturmgewehr 57. It fires the Swiss 7.5x55mm from 24 round curved magazines. It can be distinguished from the export version in having a straighter stock, more complex sights, rear mounted bipod and no wooden forearm.

TypeBattle rifle
Caliber7.5x55mm Swiss
Magazine24 rounds
OperationGas operated, roller delayed blowback
Fire selector0-1-F
Rate of fire450 - 600 rpm
Barrel length583 mm
Rifling4 grooves, 270 mm rifling
Muzzle velocity750 m/s
StockFixed
Length1.100 mm
Width?
Height?
Weight5.7 kg
SightsIron sights, post front and aperture rear, 100 to 640 m gradations
Remarks-

SG-510-4

The SG-510-4 is the export version of the SG-510-1. It is chambered in the 7.62x51mm NATO round and uses straight 20 round magazines. It also differs from the SG-510-1 in having a shorter and lighter barrel, less complex sights, a forward mounted bipod, a wooden forearm and it lacks a recoil buffer. These changes make the SG-510-4 much lighter than the Swiss model.

TypeBattle rifle
Caliber7.62x51mm NATO
Magazine20, 30 rounds
OperationGas operated, roller delayed blowback
Fire selector0-1-F
Rate of fire450 - 600 rpm
Barrel length505 mm
Rifling4 grooves, 305 mm rifling
Muzzle velocity?
StockFixed
Length1.015 mm
Width?
Height?
Weight4.32 kg
SightsIron sights, post front and aperture rear
Remarks-

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