AK-104
Encyclopedia
The AK-104 is a shortened carbine version of the AK-103
AK-103
The AK-103 is a modern, Russian-designed version of the famous AKM assault rifle, chambered for the 7.62×39mm M43 round. It combines the AKM design with developments from the AK-74 and AK-74M, with the use of plastics to replace metal or wooden components wherever possible to reduce overall weight...

 rifle. The AK-102, AK-105
AK-105
The AK-105 is a shortened carbine version of the AK-74M rifle, which in turn was derived from the original AK-47 design and its AK-74 successor. The AK-102, AK-104, and AK-105 are very similar in design, the only difference being the caliber and corresponding magazine type. The AK-105 is chambered...

, and AK-104 are very similar in design, the only difference being the caliber and corresponding magazine type. The AK-104 is chambered to fire 7.62×39mm
7.62×39mm
The 7.62×39mm round is a rifle cartridge of Soviet origin that was designed during World War II. It was first used in the RPD machine gun. Due to the worldwide proliferation of the SKS and AK-47 pattern rifles, the cartridge is utilized by both militaries and civilians alike.The 7.62×39mm...

 ammunition.

Compared to the AK-74M, AK-101, and AK-103, which are full-size rifles of similar design, the AK-102, 104, and 105 feature shortened barrels that make them a middle ground between a full rifle and the more compact AKS-74U. Whereas the AK-10x rifles have longer barrels, full-length gas pistons, and solid, side-folding polymer
Polymer
A polymer is a large molecule composed of repeating structural units. These subunits are typically connected by covalent chemical bonds...

 stocks, the AKS-74U is shorter, and features a skeleton stock.

The rifle is made out of a lightweight, shock-proof plastic
Plastic
A plastic material is any of a wide range of synthetic or semi-synthetic organic solids used in the manufacture of industrial products. Plastics are typically polymers of high molecular mass, and may contain other substances to improve performance and/or reduce production costs...

 that replaces the wood on older models. The new plastic
Plastic
A plastic material is any of a wide range of synthetic or semi-synthetic organic solids used in the manufacture of industrial products. Plastics are typically polymers of high molecular mass, and may contain other substances to improve performance and/or reduce production costs...

 frame prevents weather deterioration
Weathering
Weathering is the breaking down of rocks, soils and minerals as well as artificial materials through contact with the Earth's atmosphere, biota and waters...

, as well as rusting. The plastic
Plastic
A plastic material is any of a wide range of synthetic or semi-synthetic organic solids used in the manufacture of industrial products. Plastics are typically polymers of high molecular mass, and may contain other substances to improve performance and/or reduce production costs...

 frame also makes the weapon considerably lighter than the wooden models. The magazine is also lighter, and more durable than older models, being made out of reinforced fiberglass. The butt stock is also made of plastic
Plastic
A plastic material is any of a wide range of synthetic or semi-synthetic organic solids used in the manufacture of industrial products. Plastics are typically polymers of high molecular mass, and may contain other substances to improve performance and/or reduce production costs...

, making it lighter, more durable, and it is hollow, allowing a field kit to be stored inside of it.

The 100-series AKs are produced by the Izhmash factories in Izhevsk
Izhevsk
Izhevsk is the capital city of the Udmurt Republic, Russia, situated on the Izh River in the Western Urals. Population: From 1984 to 1987 Izhevsk carried the name Ustinov |Minister of Defense of the USSR]], Marshal of the Soviet Union, Dmitry Ustinov). The city is an important industrial center,...

, Russia
Russia
Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

.
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