The Probert Encyclopaedia of Warfare

JACKHAMMER COMBAT SHOTGUN

The Jackhammer is a 12-gauge gas operated combat shotgun firing commercial 12-ga 70 mm cartridges from a 10-round revolving cylinder (an 'Ammo Cassette'), at a rate of fire of 240 rounds-per-minute. Designed for the American military in the early 1980s, the weapon was never adopted due to budget cuts in the American Military.
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JARRETT

Jarrett are an American manufacturer of hand-made, precision custom marksman's rifles, Jarrett rifles having achieved fifteen world records since they were first made in 1979.
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