The Dual Profile Pen Gun is a highly concealable,
hand held firearm of novel design, commonly referred to as a pen gun, having the appearance and esthetics of a pen like instrument when in a neutral, non firing mode, and can only be fired by manipulating the gun out of its straight axial pen like position into an approximate (90 degree) right angle bend, so the
handle of the gun is below and at an angle to the bore of the gun. In this position the weapon is in the ready to fire position and can be held safely in the palm of the hand, until either fired or put back into a straight
neutral position. To fire, a safety ring must be twisted
clockwise, aligning the breechblock aperture with the
firing pin. After the gun has been fired, the
firing pin must be retracted back behind the breechblock wall and the safety ring turned counter
clockwise allowing a tab on the rearward end of the
barrel sufficient clearance so the
barrel can be removed for reloading or replaced by an adapter threaded to receive a replacement
barrel of any
diameter, of any length, allowing this single weapon to potentially fire any
caliber pistol,
rifle or
shotgun ammunition.