Russian 4 Gauge Shotgun

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The Russian 4 Gauge Shotgun, known officially as the KS-23, stands as a testament to Soviet-era engineering ingenuity and raw firepower. Developed in the early 1970s by TsNIITochMash, this extraordinary shotgun emerged from an unlikely source: rejected antiaircraft gun barrels that were repurposed into what would become one of the most powerful tactical shotguns in modern history.

Origins and Design

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The KS-23 was born out of a specific need for the Soviet Ministry of Internal Affairs. Designed to suppress prison riots and handle challenging tactical situations, this shotgun represents a unique approach to firearm development. Its most remarkable feature is its massive 23mm (4 gauge) bore, which makes it significantly larger than standard shotguns used by law enforcement worldwide.

Specification Details
Manufacturer Tula Arms Plant
Caliber 23x75mm R (4 gauge)
Weight 3.85 kg (8.5 lbs)
Barrel Length 510 mm (20 inches)
Action Pump-action with multi-lugged rotating bolt
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Unique Manufacturing Process

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What sets the KS-23 apart is its extraordinary origin. The weapon’s barrels were crafted from 23mm antiaircraft gun barrels that had been rejected due to manufacturing imperfections. Instead of discarding these precision-made components, Soviet engineers ingeniously repurposed them into shotgun barrels. This approach not only reduced production costs but also created a weapon with unprecedented capabilities.

Ammunition Versatility

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The KS-23 is renowned for its diverse ammunition options, including:

  • Shrapnel-10 and Shrapnel-25: Buckshot rounds with different effective ranges
  • Barrikada: A solid steel projectile capable of destroying car engine blocks at 100 meters
  • Less-lethal options: Rubber bullets and tear gas grenades
  • Specialty rounds: Flash-bang and blank cartridges

Operational Deployment

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Initially adopted by Soviet internal security forces in 1985, the KS-23 has been used by various agencies across former Soviet republics. Countries like Armenia, Kazakhstan, and Uzbekistan continue to use this formidable shotgun in law enforcement and security operations.

Civilian and International Restrictions

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Due to its extraordinary power and origin, the KS-23 faces significant restrictions. The United States banned its import during the Clinton administration, and its availability remains extremely limited. A civilian version, the TOZ-123 “Drake-4”, was briefly produced but quickly discontinued due to low demand.

The KS-23 represents more than just a firearm; it's a remarkable piece of engineering that demonstrates Soviet-era resourcefulness and technological innovation. From rejected antiaircraft gun barrels to a specialized tactical weapon, this 4 gauge shotgun continues to fascinate firearms enthusiasts worldwide.

What makes the KS-23 unique?

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Its massive 4 gauge (23mm) bore and barrels repurposed from rejected antiaircraft gun components make it one of the most powerful tactical shotguns in existence.

Is the KS-23 available for civilian purchase?

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Very limited availability. It’s banned in the United States and has restricted distribution in most countries.

What types of ammunition can the KS-23 fire?

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It can fire various rounds including buckshot, solid steel projectiles, rubber bullets, tear gas grenades, and even flash-bang cartridges.