Abstract: A generally cylindrical tubular member is provided with securing means for detachably securing the member to a hand gun such that the member is positioned forwardly of the end of the gun barrel and so that the cylindrical body member is aligned with the bore of the hand gun. The cylindrical body member is formed with a clamping mechanism on the opposite end which, when clamped, causes the compression of a resilient spacer member and an annular resilient insert member which are disposed around the barrel of the hand gun. The compressing forces developed by the clamping mechanism causes the resilient members to frictionally engage the barrel without damaging the barrel.

Abstract: A generally tubular member is provided at one end thereof with securing means for detachably securing such member as to a pistol type firearm and to be generally aligned with the bore of such firearm, forwardly thereof; the tubular member has aperture or porting means formed in a selected portion of the wall forming the tubular member whereby gases, generated during the ignition of a related bullet assembly, may escape in a generally upwardly direction thereby creating generally downwardly directed reaction forces assisting in maintaining the fired firearm stable and at least significantly eliminate the usually experienced sudden upward jump of such fired firearm.