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Heckler & Koch G3SG/1



Overview


H&K G3SG/1

Left side view of Heckler & Koch G3SG/1 sniper rifle. Note the bipod, claw mount for the scope and pre-set button behind the trigger.
Source: Unknown author - © Copyright lies with original owner

Origin
Germany
Type
Marksman rifle
Sniper rifle
Entered service
1972
Status
Limited service
Development
Early 1970's
Developer
Germany - Heckler & Koch
Production
1972 - 1990's?
Producer
Germany - Heckler & Koch
Number produced
Several thousand (estimate)
Designations
SG/1 | Scharfsch├╝tzengewehr 1
German for "sniper rifle model 1"
Notable users
Germany
Italy
Malaysia

Description


Introduction

The G3SG/1 is a marksman rifle of German origin. Designed by Heckler & Koch in the . It is a derivative of the G3 battle rifle for use as a sniper rifle.

Design

The G3SG/1 starts out as a regular G3A3 battle rifle that has been handpicked for accuracy. A special trigger group, bipod, cheekpiece and 1.5-6x scope with claw mount are fitted to transform it into a G3SG/1. The intricate G3SG/1 trigger group has a button to set the trigger just behind the trigger itself. When set, the trigger pull is very light and crisp. The trigger group retains the ability for automatic fire.

H&K G3SG/1

Heckler & Koch G3SG/1 sniper rifle resting on its bipod.
Source: Heckler & Koch - © Copyright lies with original owner

Firepower

The G3SG/1 fires the 7.62x51mm NATO round from a 20 round magazine. It is mostly used as a semi-automatic marksman rifle. The ability for full automatic fire is retained, with the cylcic rate of fire being 500 to 600 rpm. The 1.5 to 6x scope allows for effective fire out to 600 meters or more. The level of accuracy is much debated. The service records indicates it is sufficiently accurate to serve as a sniper rifle at shorter distances and it reportedly functions well as a marksman rifle at ranges beyond 500 m.

Users

The G3SG/1 was adopted by several nations as a designated marksman rifle for military use. The similarity with the regular G3 makes it easier to train soldiers that have experience with the regular G3.

The G3SG/1 was also acquired by various nations to serve as a sniper rifle for counter terrorist units. Providing ample accuracy out to 200 meters and allowing for rapid follow-up shots compared to bolt-action sniper rifles.

In the 80's and 90's many G3SG/1 were replaced by the PSG-1 and MSG90. Nowadays the many designs based AR-10 platform are the main choice as a designated marksman rifle.

Details


Facts G3SG/1
General
Origin
Germany
Type
Marksman rifle
Caliber
Caliber
7.62x51mm NATO
Feed system
20 round detachable box
Optional 5 round magazine
Barrel length
450 mm
Rifling
4 grooves, 305 mm right hand twist
Muzzle velocity
800 m/s
Operation
Action
Gas operated, roller delayed blowback
Locking
Roller locking
Fire selector
0 - 1 - F
Rate of fire
500 - 600 rpm
Dimensions
Stock type
Fixed stock with cheekpiece
Length
1.023 mm
Width
58 mm
Height
220 mm with magazine, without scope and mount
Weight
5.54 kg with optical sight
Sights
Optics
Zeiss Diavari DA 1.5-6x36 scope
Mechanical
Hooded post front, diopter sight rear
Sight radius
572 mm
Adjustment
100 to 400 m with 100 m increments
Accessories
Bipod
Yes, fixed foldable bipod

Related articles


Heckler & Koch G3

The G3SG/1 is a derivative of the G3 battle rifle. The G3SG/1 starts out as a G3 rifle hand picked for accuracy.

Heckler & Koch PSG-1

The PSG-1 is a futher development of the G3 design to serve as a very precise rifle for law enforcement service. It is a heavier, more accurate and more ergonomic firearm than the G3SG/1.

Heckler & Koch MSG90

The MSG90 is a militarized version of the PSG-1. It is a more rugged design that is better suited to military and special forces use than the PSG-1.