Patent attributes
A bore cleaning device includes a propellant, a gas seal situated proximate to the propellant, a bore rearward disk, a fibrous cup, and a bore forward disk. The bore forward disk is configured to press against a bottom surface of the fibrous cup, wherein the bore forward disk is narrower than a diameter of a bore of a firearm such that a gap exists around a circumference of the bore forward disk between the bore forward disk and the bore of the firearm. The gap is configured to enable the cup to deform into the gap. The device further includes a cylindrically shaped stack of cleaning materials between the bore rearward disk and the bore forward disk, wherein the stack of cleaning materials is configured to longitudinally transmit at least a portion of the force from the bore rearward disk to the bore forward disk.
