The present invention comprises an extension tube that attaches to the bore end
of a water jet producing device that is used to render safe improvised explosive
devices by disrupting the firing train of said devices. The present invention comprises
an extension tube having a sudden enlargement of cross section, that may be formed
by adjusting the dimensions of the interior diameter of the extension tube, at
the point of attachment, and a series of apertures in the attachment tube. The
extension tube provides a more uniform jet of water with more focused energy by
containing the jet until breech pressures are vented. Better control of the water
jet will be maintained during firing operations. Further, more energy may be put
into the water jet to accomplish specific tasks.
