Mepụta ụdị nke ahịrịokwu a dị mgbagwoju anya Pancor Jackhammer bụ nke na-akpaghị aka ma si otú a dị ka egbe egbe na United States n'okpuru Iwu Ngwá Agha Mba Nile (NFA) nke 1934.
N'ezie, ụdị okwu dị mgbagwoju anya nke ahịrịokwu ahụ bụ "Pancor Jackhammer bụ nke na-akpaghị aka ma si otú a na-ekewa ya dị ka egbe igwe site na United States ma na-achịkwa ya dị ka nke ahụ site na Bureau of Alcohol, Tobacco, Firearms and Explosives. "