The Automatic Rifle G3 cal. 7,62 mm x 51 NATO is a modern combat rifle combining the accuracy of a sniper rifle with the firepower of a machine gun. The rifle is designed for semi-automatic and fully automatic fire and can be fired from any shooting position.
The G3 is a recoil operated weapon with stationary barrel and delayed roller-locked bolt system and is fed from a 20-round magazine. Each rifle is provided with means to mount a scope.
The receiver connects barrel, cocking lever and sights. All major assemblies are housed within or are attached to that group (Flg. 7). The barrel and barrel extension are press-fitted and pinned. The threaded muzzle has a flash hider, which also serves as a grenade launcher, The cocking lever is arranged above the barrel. It is used for manual operation of the action and to arrest the bolt in rear position. The sighting device consists of a front sight and a rotary rear sight. This rotary roar sight is provided with 3 diopter holes and one open "V" sight and may be set for a range of 200, 300 and 400 metres. The rotary rear sight can also be adjusted in the lateral and vertlcal direction.
The bolt assembly (Flg. 8) consists of:
The grip with trigger pack (Fig. 14) is hinged to the receiver, can be swung down and removed from it. its housing contains the trigger mechanism (Fig. 15), the hammer, the ejector and the safety axle. The safety axle connects the trigger assembly to the grip.
Back plate and fixed butt stock (Fig. 16)
The back plate closes the receiver at the rear, Fastened to it is the buffer assernbly, the recoil spring guide tubs, the recoil spring, and the butt stock The sling holder is integral with the butt stock. The two tubular rivets in the butt stock serve to hold the butt plate and to store the locking pins when stripping the rifle.
Back plate with retractable butt stock (Fig. 17)
When using the weapon as carabine the -fixed butt stock can be replaced by a retractable butt stock. The two rails of the butt stock are guided in the back plate and alongside of the receiver. They are arrested by a spring-loaded gripping lever in retracted and extended position. A support for faste ni ng th e sl ing is fitted to t"ne back plate
The detachable handguard (Fig. 18) encloses the barrel from below, and it is fastened to the weapon by a locking pin.
The G3 rifle magazine is made of steel or light metal and takes 20 cartridges. it consists of:
The rifle is provided with a carrying sling (Fig. 22).
The blank attachment (Fig.23) is an optional accessory used only when blank cartridges are used.
When firing blank cartridges the combined flash hider / grenade launcher is unscrewed and replaced by the blank attachment. Its booster has a dull chrormium-plated finish to distinguish it clearly from the flash hider. The gas pressure can be regulated by turning the nozzle bolt (with a coin or the head of a cartridge case). The blank attachment must be cleaned after use by putting it into a solvent or gasoline.
The telescopic sight (Fig. 24) is fixed to the mount by two screws.
The receiver of the firearm is designed to receive a telescopic sight directly without any special arrangements or modifications to the basic firearm.