H&K G3


   The Heckler & Koch G3 is a 7.62mm caliber combat rifle, manufactured by the German company Heckler & Koch, in collaboration with the Spanish state company CETME (Center for Technical Studies of Special Materials).

   The origin of this rifle goes back to the last years of the Second World War, when the engineers of the Light Weapons Development Group (Abteilung 37) of the Mauser in Oberndorf am Neckar designed the MKb Gerät 06 assault rifle prototype (Maschinekarabiner Gerät 06 o Automatic carbine Apparatus 06) firing the 7.92 x 33 Kurz cartridge, using a short recoil mechanism and roller bolt adapted from the MG 42 machine gun, but with a fixed barrel and a gas-operated piston. It was observed that by paying attention to the cadences of the mechanisms, the gas system could be omitted. The resulting weapon was the Gerät 06H (the "H" is an abbreviation of halbverriegelt or "semiacerrojado"), that was denominated like StG 45 (M) (Sturmgewehr 45 (M) but it was not produced in great amounts and the war finished before that the first series rifles were completed.

   The first G3 rifles differed substantially from the most recent models; the first rifles had pivoting hilts with two positions, a folding bipod, handguards made of stamped steel sheet, wooden stock (on models with a fixed stock) or an extendable metal stock. The weapon was modernized during its active service (among other minor modifications, it was changed the hike, the muzzle flash and was added a handguard and a plastic stock), giving rise to the most recent models, the G3A3 (with a butt fixed polymer) and G3A4 (with metal cylinder head). The rifle was successful in the export market, being adopted by the armed forces of more than 40 countries. The G3 was and in some cases continues to be produced under license in: France (Manufacture d'armes de Saint-Étienne; MAS), Greece (Elliniki Biomihania Oplon), Iran (Organized Defense Industries), Luxembourg (Luxemburg Defense Technologi), Mexico (SEDENA), Burma, Norway (Kongsberg Gruppen), Pakistan (Pakistan Armament Factories), Portugal (Indústrias Nacionais de Defesa, INDEP), Saudi Arabia, Sweden (FFV), Thailand, Turkey (Makina ve Kimya Endüstrisi Kurumu, MKEK ) and the United Kingdom (Royal Ordnance)

   The G3A3 (A4) is an automatic rifle with fire selector that has a delayed roll back mechanism. The bolt assembly consists of its head and the bolt carrier. The bolt is kept aligned by two sliding rollers that fit in notches of the breech. The bolt is opened when both rollers are compressed inwards against notches when pushed by the pressure exerted by the gases on the head of the bolt. When the rollers move inward, the recoil energy is transferred to the bolt and the bolt carrier starts to reverse while the bolt head moves back slowly relative to the bolt carrier. While the bolt carrier releases the rollers, the pressure in the bore of the barrel is reduced to a safe level, the bolt head is retained by the bolt carrier and moves backward as a single piece, continuing the operational cycle. The bolt also has an anti-rebound mechanism, which prevents it from jumping out of the chamber of the barrel. The spring-loaded extracting nail is inside the bolt, while the ejector lever is located inside the trigger assembly (actuated by the bolt when backing up).

   The rifle fires with a hammer and has a trigger mechanism with a 3-position fire selector, which is also the weapon's safety and prevents accidental firing (in the "E" or "1" position - semiautomatic mode ("Einzelfeuer") ")," F "or" 20 "- automatic mode (" Feuerstoß ")," S "or" 0 "- weapon secured (" Sicher ") and the trigger is mechanically deactivated). The weapon can be equipped with an optional 4-position selector, illustrated with pictograms and an ambidextrous lever. The fourth position of the selector activates the short burst mode (3 shots).

   The weapon is equipped with mechanical sights that consist of a revolving drum lift and a covered sight. The lift, adjustable both vertically and horizontally, has an open notch used to fire up to 100 m and three openings used for distances of 200, 300 and 400 m. The mechanism drawer has grooves where the HK clamps are fixed, used to mount optical day or night sights.

   The rifled barrel (with four right-hand grooves and a rotation rate of 305 mm) ends in a grooved flame arrestor that can also be used to mount a bayonet or as an adapter for launching rifle grenades. As of G3A3, the barrel flute was polygonal. The chamber of the barrel is grooved, which helps in the initial extraction of a cap shot (since it opens under great pressure in the barrel). The G3A3 uses straight double-row steel (260 g) or aluminum (140 g) straight loaders, as well as a 50-round drum made by Allied Armament.


Heckler & Koch G3



H&K G3


   The Heckler & Koch G3 is a 7.62mm caliber combat rifle, manufactured by the German company Heckler & Koch, in collaboration with the Spanish state company CETME (Center for Technical Studies of Special Materials).

   The origin of this rifle goes back to the last years of the Second World War, when the engineers of the Light Weapons Development Group (Abteilung 37) of the Mauser in Oberndorf am Neckar designed the MKb Gerät 06 assault rifle prototype (Maschinekarabiner Gerät 06 o Automatic carbine Apparatus 06) firing the 7.92 x 33 Kurz cartridge, using a short recoil mechanism and roller bolt adapted from the MG 42 machine gun, but with a fixed barrel and a gas-operated piston. It was observed that by paying attention to the cadences of the mechanisms, the gas system could be omitted. The resulting weapon was the Gerät 06H (the "H" is an abbreviation of halbverriegelt or "semiacerrojado"), that was denominated like StG 45 (M) (Sturmgewehr 45 (M) but it was not produced in great amounts and the war finished before that the first series rifles were completed.

   The first G3 rifles differed substantially from the most recent models; the first rifles had pivoting hilts with two positions, a folding bipod, handguards made of stamped steel sheet, wooden stock (on models with a fixed stock) or an extendable metal stock. The weapon was modernized during its active service (among other minor modifications, it was changed the hike, the muzzle flash and was added a handguard and a plastic stock), giving rise to the most recent models, the G3A3 (with a butt fixed polymer) and G3A4 (with metal cylinder head). The rifle was successful in the export market, being adopted by the armed forces of more than 40 countries. The G3 was and in some cases continues to be produced under license in: France (Manufacture d'armes de Saint-Étienne; MAS), Greece (Elliniki Biomihania Oplon), Iran (Organized Defense Industries), Luxembourg (Luxemburg Defense Technologi), Mexico (SEDENA), Burma, Norway (Kongsberg Gruppen), Pakistan (Pakistan Armament Factories), Portugal (Indústrias Nacionais de Defesa, INDEP), Saudi Arabia, Sweden (FFV), Thailand, Turkey (Makina ve Kimya Endüstrisi Kurumu, MKEK ) and the United Kingdom (Royal Ordnance)

   The G3A3 (A4) is an automatic rifle with fire selector that has a delayed roll back mechanism. The bolt assembly consists of its head and the bolt carrier. The bolt is kept aligned by two sliding rollers that fit in notches of the breech. The bolt is opened when both rollers are compressed inwards against notches when pushed by the pressure exerted by the gases on the head of the bolt. When the rollers move inward, the recoil energy is transferred to the bolt and the bolt carrier starts to reverse while the bolt head moves back slowly relative to the bolt carrier. While the bolt carrier releases the rollers, the pressure in the bore of the barrel is reduced to a safe level, the bolt head is retained by the bolt carrier and moves backward as a single piece, continuing the operational cycle. The bolt also has an anti-rebound mechanism, which prevents it from jumping out of the chamber of the barrel. The spring-loaded extracting nail is inside the bolt, while the ejector lever is located inside the trigger assembly (actuated by the bolt when backing up).

   The rifle fires with a hammer and has a trigger mechanism with a 3-position fire selector, which is also the weapon's safety and prevents accidental firing (in the "E" or "1" position - semiautomatic mode ("Einzelfeuer") ")," F "or" 20 "- automatic mode (" Feuerstoß ")," S "or" 0 "- weapon secured (" Sicher ") and the trigger is mechanically deactivated). The weapon can be equipped with an optional 4-position selector, illustrated with pictograms and an ambidextrous lever. The fourth position of the selector activates the short burst mode (3 shots).

   The weapon is equipped with mechanical sights that consist of a revolving drum lift and a covered sight. The lift, adjustable both vertically and horizontally, has an open notch used to fire up to 100 m and three openings used for distances of 200, 300 and 400 m. The mechanism drawer has grooves where the HK clamps are fixed, used to mount optical day or night sights.

   The rifled barrel (with four right-hand grooves and a rotation rate of 305 mm) ends in a grooved flame arrestor that can also be used to mount a bayonet or as an adapter for launching rifle grenades. As of G3A3, the barrel flute was polygonal. The chamber of the barrel is grooved, which helps in the initial extraction of a cap shot (since it opens under great pressure in the barrel). The G3A3 uses straight double-row steel (260 g) or aluminum (140 g) straight loaders, as well as a 50-round drum made by Allied Armament.


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