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SIG SG-510


Sturmgewehr 57


Overview


SG-510-4

Right side view of SG-510-4 battle rifle.
Source: www.modern-firearms.net - © Copyright lies with original owner

Origin
Switzerland
Type
Battle rifle
Entered service
1957
Status
Obsolete
Development
1950's
Developer
Switzerland - SIG
Production
1957 - 1983
Producer
Switzerland - SIG
Number produced
Over 600.000
Designations
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)
G2 (German trials rifles)
Notable users
Switzerland
Bolivia
Chile

Description


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 In active service it has been replaced by the newer SG-550, but remains in reserve use.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.

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.

Details


Facts Sturmgewehr 57 SG-510-4
General
Origin
Switzerland
Type
Battle rifle
Caliber
Caliber
7.5x55mm Swiss
Feed system
24 round detachable box magazine
Barrel length
583 mm
609 mm including muzzle brake
Rifling
4 grooves, 270 mm right hand twist
Muzzle velocity
750 m/s
Operation
Action
Gas operated, roller delayed blowback
Locking
None, roller delayed blowback
Fire selector
0 - 1 - F
Rate of fire
450 - 600 rpm
Dimensions
Stock type
Fixed
Length
1.10 m
Weight
5.7 kg
Sights
Mechanical
Iron sights, post front and aperture rear
Sight radius
635 mm
Adjustment
100 to 640 m
Optics
Optional Kern 4x24 scope for marksman use
Accessories
Bipod
Fixed stowable bipod
Grenade launching
Gewehrgranaten 58 pattern rifle grenades

Media