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Bernardelli B4 Tactical Combat Shotgun ()

Authored By Staff Writer | Last Updated: 3/9/2009

The Bernardelli B4 offered up semi-automatic or pump-action fire from a detachable 12-gauge box magazine.

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The Bernardelli B4 series of gas-operated, tactical combat shotguns was a semi-automatic system utilizing 12-gauge ammunition and designed exclusively for operations by military and security forces. The B4 came about as an answer to the United States JSSAP (Joint Service Small Arms Program) specification calling for a new type of semi-automatic shotgun. The 1970's-era program sought to coordinate weapon standardization between the main branches of the US military.

The resulting B4 proved of high quality and durability and was distinct from other combat shotguns in that it operated from a detachable box magazine instead of a tubular magazine. Additionally, the B4 could be operated as a self-loading weapon or manually using the pump slide. The semi-automatic action was to provide a higher "second hit" probability by not having the operator pump the slide to introduce the follow-up round, thus potentially losing track of his target (if only for a second or two). The shotgun also featured an integrated carrying handle, folding stock and a high-quality steel barrel with an overall anti-glare finish. Ammunition types were all conventional and the weapon could fire from a 3-, 5- or 8-round curved detachable box magazine.

The series, along with its semi-automatic action, were banned from import in the United States, along with several other potential box-fed shotgun systems on the civilian market (including the Italian Beretta M3P and French SPAS-15) - courtesy of the Assault Weapons Ban Act beginning in 1994. The B4 also appeared in a pump-action only model designated as the B4/B. The B4/B visually retained the stock and body of the B4 with some slight alterations to the pump slide and forward section.

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Specifications for the
Bernardelli B4
Tactical Combat Shotgun


Country of Origin: Italy
Manufacturer: Bernardelli - Italy
Initial Year of Service:


Overall Length: 950mm (37.40in)
Barrel Length: 0.00mm (0.00in)
Weight (Empty): 7.61lbs (3.45kg)


Caliber: 12 Gauge
Action: Gas-Operated Semi-Automatic / Manual Pump-Action
Feed: 3-, 5- or 8-round detachable box magazine
Sights: Iron


Variants:
B4 - Base Model; self-loading or pump-action loading via selector switch.


B4/B - Based on the B4 sans self-loading action and selection; lighter than standard B4 model.


Operators:
United States; Italy