The StG44 (Sturmgewehr 44 or "Assault rifle model 1944") was an assault rifle developed in Nazi Germany during World War II and was the first of its kind to see major deployment. It is also known under the designations MP43 and MP44 (Maschinenpistole 43, Maschinenpistole 44 respectively), which denotes earlier development versions of the same weapon.
The rifle was chambered for the 7.92x33mm Kurz cartridge, also known as 7.92 mm Kurz (German for "short"). This shorter version of the German standard (7.92x57mm Mauser) rifle round, in combination with the weapon's selective-fire design, provided a compromise between the controllable firepower of a submachine gun at close quarters with the accuracy and power of a Karabiner 98k bolt action rifle at intermediate ranges. While the StG44 had less range and power than the more powerful infantry rifles of the day, Wehrmacht studies had shown that most combat engagements occurred at less than 300 m with the majority within 200 m. Full-power rifle cartridges were overpowered for the vast majority of uses for the average soldier.
The StG44's receiver was made of heavy stamped and welded steel as were other contemporary arms such as the MP40 and MG42. This made for a fairly heavy rifle, especially one firing an intermediate-power cartridge. Difficulties with fabrication, the need to use available non-priority steels, and the exigencies of war resulted in a heavy receiver. U.S. military intelligence criticized the weight of the weapon along with the inclusion of the fully automatic feature which it considered "ineffectual for all practical purposes. The British were also critical saying that the receiver could be bent and the bolt locked up by the mere act of knocking a leaning rifle onto a hard floor. Many of these criticisms are more a testimonial of the Allied aversion rather than an accurate view of the weapon's characteristics which were proven during combat in the war.
To its credit, it was the first weapon of its class, and the concept had a major impact on modern infantry small arms development. By all accounts, the StG44 fulfilled its role admirably, particularly on the Eastern Front, offering a greatly increased volume of fire compared to standard infantry rifles. In the end, it came too late to have a significant effect on the tide of the war.
One problem with this mix was that the standard rifles were too large to be effectively used by mechanized and armored forces, where they were difficult to maneuver in the cramped spaces of an armored vehicle. Submachine guns such as the MP28, MP38, and MP40 were issued to augment infantry rifle use and increase individual firepower, but suffered from a distinct lack of range and accuracy beyond 100 m. A small fast-firing weapon would have been useful in this role, but again the need did not seem pressing.
The issue arose once again during the invasion of the Soviet Union. The Red Army had been in the process of replacing its own bolt action rifles in the immediate pre–war era. Increasing numbers of semi-automatic Tokarev SVT-38 and SVT-40s were reaching Red Army units, though issue was generally restricted to elite units and non-commissioned officers. Submachine guns were extremely widespread, and issued on a far larger scale; some Soviet rifle companies were completely equipped with PPSh-41 submachine guns.
This experience with high volumes of hand-held automatic 'assault' fire forced German commanders to rethink their small arms requirements. The German army had been attempting to introduce semi-automatic weapons of their own, notably the Gewehr 41, but these early rifles proved troublesome in service, and production was insufficient to meet forecast requirements. Several attempts had been made to introduce lightweight machine guns or automatic rifles for these roles, but invariably recoil from the powerful 7.92 mm Mauser round made them too difficult to control in automatic fire.
The German solution was to use a round of intermediate power, between that of a full-power rifle cartridge and pistol ammunition. Experiments with several such intermediate rounds had been going on since the 1930s, but had been constantly rejected for use by the army. By 1941, it was becoming clear that action needed to be taken, and one of the experimental rounds, the Polte 7.92x33mm Kurzpatrone ("short cartridge") was selected. To minimize logistical problems, the Mauser 7.92 mm rifle cartridge was used as the basis for the final 7.92x33mm Kurz intermediate round, which also utilized an aerodynamic spitzer rifle bullet design.
The original prototype of Haenel's design, the MKb 42(H), fired from an open bolt and used a striker for firing (the mechanism is based on the Czechoslovak ZB vz. 26). The receiver and trigger housing with pistol grip were made from steel stampings, which were attached to the barrel assembly on a hinge, allowing the weapon to be folded open for quick disassembly and cleaning. The Haenel design proved superior to Walther's MKb 42(W), and the army then asked Haenel for another version incorporating a list of minor changes designated MKb 42(H). One was to include lugs for mounting a standard bayonet, another to change the pitch of the rifling. A production run of these modified versions was sent to the field in November 1942, and the users appreciated it with a few reservations. Another set of modifications added a hinged cover over the ejection port to keep it clean in combat, and rails to mount a telescopic sight. A run of these modified MKb 42(H)s in late 1942 and early 1943 produced 11,833 guns for field trials.
Ultimately it was recommended that a hammer firing system operating from a closed bolt similar to Walther's design be incorporated. The gas expansion chamber over the barrel was deemed unnecessary, and was removed from successive designs.
In order to preserve the weapon's development, a new project at Gustloff was starting to produce a similar weapon using the original Mauser round, the Mkb 43(G). Whenever Hitler asked about the progress of the rifle, he was always shown one of these prototypes, although there was no intention of producing them. Meanwhile the newest version of the original Mkb 42(H) was called the Maschinenpistole 43 (MP43) to disguise it as an upgrade to existing submachine guns. Another change fitted a rifle grenade launcher attachment from the earlier MKb 42(H) to the MP43/1.
Eventually the truth surfaced and Hitler ordered the project stopped once again. However in March 1943 he allowed the run to continue for evaluation purposes, which then continued until September. Due to the positive combat reports, it was then allowed to continue.
By the end of the war, some 425,977 StG44 variants of all types were produced. The assault rifle proved a valuable weapon, especially on the Eastern front, where it was first deployed. A properly trained soldier with an StG44 had an improved tactical repertoire, in that he could effectively engage targets at longer ranges than with an MP40, but be much more useful than the Kar98k in close combat, as well as provide light cover fire like a light machine gun.
One unusual addition to the design was the Krummlauf; a bent barrel attachment for rifles with a periscope sighting device for shooting around corners from a safe position. It was produced in several variants: a "I" version for infantry use, a "P" version for use in tanks (to cover the dead areas in the close range around the tank, to defend against assaulting infantry), versions with 30°, 45°, 60° and 90° bends, a version for the StG44 and one for the MG42. Only the 30° "I" version for the StG44 was produced in any numbers. The bent barrel attachments had very short lifespans – approx. 300 rounds for the 30° version, and 160 rounds for the 45° variant. The 30° model was able to achieve a 35x35 cm grouping at 100 m.
A primary use of the MP44/StG44 was to counter the Soviet PPS and PPSh-41 submachine guns, which used the 7.62x25mm Tokarev round. These cheap, mass-produced weapons used a 71-round drum magazine or 35-round box magazine and though shorter-ranged than the Kar98k rifle, were more effective weapons in close quarter engagements. The StG44, while also lacking the range of the Kar98k, had a longer range than the PPS/PPSh submachine guns and a comparable rate of fire. Also, while they could fire fully automatic, they were designed to default to semi-automatic fire. They were surprisingly accurate, and their slow rate of fire gave them controllability even on full-auto. While the design details are quite different, the concept of the StG44 was obviously carried on in the most famous and most numerously manufactured assault rifle family, beginning with the AK-47.
Mauser developed several prototype Sturmgewehr 45 assault rifles, first with the Gerät 06 ("device 06") using a roller-delayed blowback mechanism originally adapted from the roller-locked recoil operation of the MG42 machine gun but with a fixed barrel and gas system. It was realized that with careful attention to the mechanical ratios, the gas system could be omitted. The resultant weapon, the Gerät 06(H) was supposedly slated for adoption by the Wehrmacht as the StG45.
This mechanism would later be developed by former Mauser engineers Vorgrimmler, Löffler and Kunert at AME, Ateliers Mecanique de Mulhouse in Alsace between 1946–1949. Three versions were made using .30 Carbine, 7.92x33mm Kurz as well as the 7.65x35mm cartridge developed by Cartoucherie de Valence and adopted in 1948. Being engaged in the Indochina War and being the second NATO contributor, France canceled the adoption of these new weapons. The German technicians moved to Spain and began production of the precursor of CETME Model A and Heckler & Koch's G3 battle rifle and MP5 submachine gun.
Towards the end of the war, there were last-ditch efforts to develop cheap so-called Volksgewehr rifles in the 7.92x33mm caliber. One of these, the Volkssturmgewehr 1-5 (VG 1-5), used a gas-delayed blowback action based on the Barnitzke system, whereby gas bled from the barrel near the chamber creates resistance to the rearward impulse of the operating parts, which ceases when the projectile leaves the muzzle, allowing the operating parts to be forced rearward by the residual pressure of the cartridge case. This principle has been used most successfully in the P7 pistol.
After World War II, many Western countries continued using their existing full-caliber rifles. Although the 7.62x51mm NATO round adopted post-war was still a full-power cartridge, the trend towards the adoption of less powerful rounds was already underway in the West. For example, the M1 Garand, had initially been developed for the .276 Pedersen (7 mm) round, a cartridge less powerful than the standard .30-06 Springfield. The U.S. Army's adoption of the M1 carbine in 1941 proved the utility of a small, handy, low-powered rifle that required little training to use effectively. The selective fire M2 carbine is generally not considered an assault rifle due to its second-line role, though it technically fits all of the requirements.
America and, later, NATO developed assault rifles along a roughly similar path by at first adding selective-fire capability in a reduced power, full-caliber cartridge. The Soviet Union lightened the AK-47 and introduced the AKM. America developed the concept of small-caliber, high-velocity (SCHV) bullets and further reduced the weight of their firearms with the introduction of the M16. The Soviets followed suits by introducing the SCHV AK-74 rifle.
As for the Sturmgewehr itself, it remained in use with the East German Nationale Volksarmee until it was eventually replaced with variants of the AK-47 assault rifle. The Volkspolizei used them until approximately 1962 when they were replaced by the PPSh-41. Other countries to keep StG44s in their inventory after World War II included the CSSR and the Socialist Federal Republic of Yugoslavia. These weapons were used by units such as the 63rd Paratroop Brigade of Serbia and Montenegro until the 1980s, when they were ultimately transferred to Territorial Defense reserves or sold to friendly regimes in the Middle East and Africa.
After World War II, the Soviet Union and other Eastern Bloc states supplied client regimes and guerrilla movements with captured German arms such as the StG44 along with the-then newly manufactured 7.92x33 mm ammunition. French forces discovered many in Algeria and determined the origin to be the CSSR. Examples also found their way into the hands of the PLO and Hezbollah in Lebanon. It is still used in very limited numbers by militia forces in the Middle East as well as some countries in the Horn of Africa. StG44s have been confiscated from militia groups by U.S. forces in Iraq.
New semi-automatic reproductions of the MKb42(H), MP43/1, and StG44 are being manufactured in Germany today by Sport-Systeme Dittrich in the original 7.92x 33 mm Kurz.
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