Abstract: A blank ammunition attachment comprising: a housing configured to be attached to a firearm; a first trap contained in the housing having a closed proximal end and a first trap bore at a distal end; a series of traps adjacent to the first trap carried by the housing wherein each trap in the series of traps includes a trap bore; and, a muzzle stop enclosing the housing at a housing distal end wherein the housing is configured to prevent a projectile from exiting the housing is the projectile enters the housing at a proximal end.

Abstract: The present invention is a firearm suppressor that includes a baffle stack having a plurality of baffles received in an outer tube wherein a first baffle is received into an adjacent baffle; a piston assembly and an endcap removably attached to the outer tube; a piston housing, piston cap and piston spring included in the piston assembly; a first concave section defined in an aperture including at least one baffle; a second concave section defined in an aperture including at least one baffle wherein the first concave section and the second concave section are offset relative to a diameter bisecting the baffle; a plurality of ports defined in the outer tube disposed forward of a midpoint in the outer tube configured to shift the center of mass to the rear of the outer tube; and, an end cap removably attached to the outer tube.

Abstract: Disclosed herein is a drill stem having a core bit mounted thereon and an inner tube assembly having an inner tube mounting a corebreaker case that either has or in conjunction with the inner tube provides a corebreaker recess having an upwardly facing planar edge. Advantageously a stop ring and a non-axial split annular corebreaker are mounted in the recess with the stop ring being between the corebreaker and inner tube, even though the corebreaker may be axially slit and/or no stop ring used. The corebreaker has inner and outer peripheral surfaces that are of constant diameters, axial opposite transverse inner and outer planar edges while the recess is in part defined by planar edges. At least one of the parallel edges is inclined to the tube central axis when the core breaker is in its core taking position.