The Pancor Jackhammer is a bullpup automatic shotgun which never entered production, using a revolver-style drum magazine with a rotating action similar to the British Webley-Fosbery revolver. There is an element of unreality in featuring the Jackhammer in any context, as the weapon never made it past prototype stage; only two guns capable of firing in fully automatic mode were ever made.

The real guns had problems with magazine grooves needing to be manufactured to extremely tight tolerances for the weapon to cycle correctly; typically, the full auto guns could only manage two or three shots sequentially before failing to cycle. The weapon's design was also cumbersome and uncomfortable to shoot.


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