HK G3SG1

Overview

HK G3SG1
General Information
Type	Designated Marksman Rifle
Place of Origin	West Germany
Designer Companies	Heckler & Koch
Period Designed	~1972
Manufacturer	Heckler & Koch
Period Produced	1972 - ?
Number Built	"several thousand"
Developed From	HK G3A3
Characteristics
Cartridge	7.62x51mm
Action	Gas-operating, roller delayed blowback, roller locking
Firemodes	Full, semi, safe
Feed System	Detachable box magazine
Ammunition Loading	HK G3 compatible magazines: • 5-rnd • 20-rnd • 30-rnd
Dimensions
Weight	5.54kg
Barrel Length	450mm
Length	1,023mm
Height	220mm (with magazine, without scope or mount)
Width	58mm
Components
Selector	0-1-F
Rifling	4 grooves, 305mm right hand twist
Muzzle Device	800m/s (unstated cartridge)
Attachments
Bipod	Yes: fixed, foldable
Sling	Yes
Stock
Stock Type	Fixed with cheek piece
Sights
Sights	Iron sights • Hooded front post • Diopter rear sight Telescopic sight • Zeiss Diavari DA 1.5-6x36
Sight Ranges	100m, 200m, 300m, 400m (iron sights)
Sight Radius	572mm (iron sights)
Universal Attachments
Rail Type	HK "claw mount" socket

The HK G3SG1 is a German marksman rifle developed from the G 3 platform.

Naming

Designation	Explanation
HK G3SG1	Name adhering to HK system.
G 3 SG 1	Name adhering to Bundeswehr system.

Variants

G3 — G 3 Original model with wooden furniture. G3A1 — G 3 A1 Updated model with collapsible stock. G3A2 — G 3 A2 Updated model with new rear sight. G3A3 — G 3 A3 Updated model with fixed stock and polymer furniture. G3NA3 — G 3 N A3 A3 model with Navy trigger group. G3A3A1 — G 3 A1 A1 A3 model with ambidextrous trigger group. Bundesheer designation. G3A4 — G 3 A4 Updated model with collapsible stock and polymer furniture. G3A4A1 — G 3 A4 A1 A4 model with ambidextrous trigger group. Bundesheer designation. G3KA4 — G 3 K A4 Compact model with collapsible stock. G3KA4A1 — G 3 K A4 A1 A4 model with ambidextrous trigger group. Bundesheer designation. G3SG1 — G 3 SG 1 Scoped model. Derivatives See Heckler & Koch for a table showing more G3 derivatives. HK41A2 Semi-automatic derivative with fixed stock. HK41A3 Semi-automatic derivative with fixed stock. HK81 Marksman derivative. HK91A2 Civilian model with fixed stock. HK91A3 Civilian model with collapsible stock. G3A5 — G 3 A5 Model for Denmark. G3A6 — G 3 A6 Model for Iran. G3A7 — G 3 A7 Model for Turkey. G3A7A1 — G 3 A7 A1 Updated model for Turkey. HK G3-KK "Kleinkaliber" model in .22 LR for training purposes, only a small batch were manufactured. HK G3-TGS "Tactical Group Support" model fitting the HK79 grenade launcher on the G3A4. Foreign AG 3 Norwegian derivative. Ak 4 Swedish derivative.

West Germany Weapons Modern Period (1991 — Present)

Infantry Weapons
Melee Weapons	Bayonet	[[]]
	Survival Weapon	[[]]
Sidearms	Pistol	HK 45 (Compact • Compact Tactical • Tactical) • Mark 23 • P 8 • P 30 (L • SD • SK • SK S) • P 46 • P 80 • P 2000 • SFP (9 • 9 L • 9 L OR • 9 M • 9 Match OR • 9 OR • 9 SK • 40) • UCP • USP (9 • 9 Custom Sport • 9 Elite • 9 Expert • 40 • 40 Custom Sport • 40 Expert • 45 • 45 Custom Sport • 45 Elite • 45 Expert • 45 Tactical)
	Revolver	[[]]
	Machine Pistol	[[]]
Close Quarters	Personal Defense Weapon	MP7 (A1 • A2)
	Submachine Gun	HK PDW • MP 5 (A1 • A2 • A3 • A4 • A5) • MP 60 • MP 61 • MP 64 • UMP (9 • 40 • 45) • USC
	Shotgun (automatic)	[[]]
	Shotgun (semi-automatic)	[[]]
	Shotgun (manual-action)	HK FP6
Primary Weapons	Assault Rifle (5.45/5.56)	CR223 • HK 50 • HK 237 • HK 337 • HK 416 (A5 • A7 • A8) • HK 433 • HK 437 • G36 (A1 • A2) • XM8 • XM29
	Assault Rifle (other)	[[]]
	Assault Carbine (5.45/5.56)	HK 416C
	Assault Carbine (other)	[[]]
	Battle Rifles	HK 417 • G 3 (A1 • A2 • A3 • N A3 • A4 • A5 • A6 • A7 • A7 A1) • G 28
	Battle Carbine	[[]]
Automatic Support Weapons	Light Support Weapon	[[]]
	Light Machine Gun	HK GR6 (C • S) • HK GR9 (C • S) • HK MG 36
	General Purpose Machine Gun	HK 121 • HK 123 • MG 3 (A1) • MG 4 • MG 5 (A1)
	Heavy Machine Gun	[[]]
Long Range	Anti-Materiel Rifle	[[]]
	Bolt-Action Rifle	[[]]
	Designated Marksman Rifle	[[]]
Launchers	Grenade Launcher (Attachment)	[[]]
	Grenade Launcher (Standalone)	XM25
	Disposable Rocket Launcher	[[]]
	Rocket Launcher	[[]]
	MANPADS	[[]]
Non-Lethal Weapons	Pistol	[[]]
Underwater Weapons	Sidearm	P11
	Rifle	[[]]
Explosives	Anti-Personnel Mines	[[]]
	Anti-Tank Mines	[[]]
	Offensive Grenades	[[]]
	Smoke Grenades	[[]]

Infantry Equipment
Clothing	Backpacks	[[]]
	Body Armour	[[]]
	Bomb Suit	[[]]
	Elbow and knee pads	[[]]
	Signals & IFF	[[]]
	Suits	[[]]
	Vests & Webbing	[[]]
Headwear	Communication	[[]]
	Gas Masks & Rebreathers	[[]]
	Goggles	[[]]
	Helmets	[[]]
	Vehicle Headwear	[[]]
Optics, Detection and Surveillance	Man-Portable Radar	[[]]
	Mine Detectors	[[]]
	Night Vision Goggles	[[]]
	Periscopes	[[]]
	Rangefinders	[[]]
	Surveillance	[[]]

Artillery
Anti-Aircraft Guns	[[]]
Anti-Tank Guns	[[]]
Anti-Tank Guided Missile Launchers	[[]]
Anti-Tank Guided Missiles	[[]]
Grenade Machine Guns	[[]]
Howitzers	[[]]
Mortars	[[]]
Railroad Artillery	[[]]
Recoilless Guns	[[]]
Rocket Artillery	[[]]
Siege Artillery	[[]]

Land Vehicle Weapons
Vehicle Machine Guns	HK MG 5A1
40mm Tank Guns	[[]]
75mm Tank Guns	[[]]
76.2mm Tank Guns	[[]]
84mm Tank Guns	[[]]
94mm Tank Guns	[[]]
105mm Tank Guns	[[]]
120mm Tank Guns	[[]]
Howitzers	[[]]
Vehicle Autocannon	[[]]
ATGMs	[[]]

Aircraft Weapons & Munitions
7.62mm Machine Guns	[[]]
12.7mm Machine Guns	[[]]
23mm Cannons	[[]]
30mm Cannons	[[]]
37mm Cannons	[[]]
Rocket Pods	[[]]
Rockets	[[]]
Air-to-Air Missiles	[[]]
Air-to-Ship Missiles	[[]]
Air-to-Surface Missiles	[[]]
Anti-Radiation Missiles	[[]]
Cruise Missiles	[[]]
Bombs	[[]]