Patent ID: 6050170
Filing Date: 2000-04-18
Classification: F41A

Abstract:
A combination anti-rotation and counter recoil device for a sub-caliber barrel positioned inside a larger caliber barrel gun which is provided with a tubular member simulating a cartridge case of the size of said larger caliber gun, and provided with a flat base, said tubular member case having the barrel of said sub-caliber weapon centrally positioned therein and extending through said flat base, said combination anti-rotation and counter recoil device comprising:a flat member having oppositely disposed vertical parallel flat sides,means for attaching said flat member to said flat base of said tubular member,said flat member being provided with a centrally disposed opening in its upper portion,a u-shaped member having a flat base and parallel upstanding sides and of a size to fit snugly in the breech block slot in the breech ring of said larger caliber gun,said u-shaped member having two spaced arms extending forward of said member and so positioned to engage the oppositely disposed parallel sides of said flat member and prevent its rotation,a cylinder attached to said u-shaped member and provided with a piston having a shoulder surrounding said piston and adjacent one end thereof,said piston being biased to extend out of said cylinder by a spring,said piston being so positioned so as to engage the opening in said flat member.