Heckler-Koch / Olin CAWS (Germany)

Experimental shotgun designed to be able to be fired both semi automatic and fully automatic. In automatic mode, cyclic rate was reported to be 240 Rounds per Minute. It was developed by H&K with Olin/Winchester and uses a non standard brass case ammunition. The cartridge is basically a 12 gauge but it is non standard and the CAWS cannot use standard 12 Gauge ammunition. As well, the 12 Gauge ammunition developed for the CAWS cannot be used in standrad shotguns.

The Heckler & Koch CAWS model was AAI's competitor in US military trials for a combat shotgun. The project was later cancelled and neither weapon entered active service. As well, there seems to be no plans to produce this weapon. The weapon is bulpup in desing with the magazine behind the trigger and the shotgun is constructed from polymars and composites. Even so, the weapon is quite hefty and is about nine and a half pounds. Shotgun has a 1x optical sight in handle.

The shotgun uses 10 round magazines.

Weight:	9.5 lbs (4.3 kg).
Caliber:	12 Gauge (Non Standard).
Barrel Length:	18 inches (45.7 cm).
Overall Length:	25 inches (63.5 cm).
Action:	Gas Operated.
Mode of Fire:	Semi Automatic, Three Round Burst, and Fully Automatic.
Range:	300 ft (90 m).
Magazine:	10 round.
Cost:	1500?
Made in:	Germany.
Special:	Capable of Fully Automatic Fire. Integral 1x optical sight in handle.

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Saiga 12 (Russia)

Saiga 12K disassembled

Saiga 12 shotgun heavily modified by Tromix in USA to their 8" Swat configuration, with aftermarket US-made 10-round magazine
Saiga 12K with 430 mm barrel
Type: Semi-auto, gas operated, rotating bolt shotgun
Gauge: 12
Chamber: 76mm (3").
Length: 910/670mm (buttstock open/folded)
Weight: 3.5kg.
Barrel length: 430mm.
Capacity: 5 or 8 rounds in detachable box magazine

based on the famous and time-proven Kalashnikov AK-47 assault rifle design. ..box magazine feeding....
The shotgun part of this large family includes guns chambered for .410, 20 and 12 gauge magnum ammunition. In each chambering, there's at least three versions, with long barrel and fixed stock, long barrel and folding, AK-74M type polymer stock and with same folding stock and shorter barrel. The latter versions intended as a security, police and self-defense weapons, and are widely used by numerous Russian law enforcement and private security services.
In general, Saiga 12K is a reliable and effective close combat weapon, being much cheaper than its famous western counterparts from Beretta, Franchi and other brands.

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Benelli M4 Super 90 / M1014 JSCS (Italy)

Benelli M4, with extended buttstock

Type: gas operated, semi-auto
Gauge: 12 (chamber 3" - 76 mm)
Length: 1010 mm (extended stock), 886 mm (closed stock)
Barrel length: 470 mm
Weigth 3.8 kg unloaded
Feeding: 6 rounds in underbarrel tube magazine

Benelli M4 Super90 is a gas operated, smoothbore, magazine fed semi-auto shotgun. The telescopic stock may be replaced by pistol grip or hunting-style stocvk without any tools. Acessory weaver-style rail is installed at the top of the receiver. This rail may accept scopes, laser illuminators, night-vision sights etc.Gun is so designed that it can fire 3" and 2 3/4" (70 and 76 mm) shotshells of different power without any ajustments and in any combination.Gun is very reliable in any weather conditions. Selengkapnya...

Jackhammer shotgun (USA)

fully automatic

Gauge: 12
Length: 787 mm
Barrel length: 525 mm.
Weight unloaded : 4.57 kg
Capacity : 10 rounds in removable revolver-type drum magazine
Rate of fire: 240 rounds per minute

The Jackhammer is a gas operated, fully automatic only shotgun. The feed system consists of the 10 shot, revolver type detachable cylinders, named "Ammo Cassette". The cassette may have 10 chambers for more or less conventional 12 gauge shotgun shells. Selengkapnya...