Abstract: The sub machine gun fires single shots in semi automatic fashion, and also fires fully automatically, with the firing mode being manually selectable. The firing mode selection also includes a safe setting, and there is a grip safety which renders the gun inoperative unless the pistol grip is squeezed. The safeties are configured and balanced so that the gun will not fire if dropped. There is one manually operable latch that allows complete take down of the action. When the receiver cover is lifted with the bolt cocked, the bolt will not accidentally move forward to fire the gun. The slide actuator holds the receiver cover in its open position. The barrel is latched in place by a latch pin that cannot unintentionally be removed from the gun and misplaced. The barrel latch pin can be partially withdrawn to allow removal of the barrel from the receiver.

Abstract: A full automatic firearm or submachine gun has a combined trigger, sear and selector mechanism including automatic and semi-automatic bars which are pivoted at their forward end to the trigger, and a sear member disposed therebetween and independently pivotably mounted. A selector member is pivotable among safe, semi-automatic and full automatic fire positions, and is engageable with the bars to effect their pivotal movement as required and is engageable with the sear to prevent its movement in the safe position. The semi-automatic bar, automatic bar and sear have means which are engageable to pivot the sear from engagement with the bolt upon pulling of the trigger, but only one bar is so engaged at any one time. Biasing means bias the sear, semi-automatic bar, automatic bar and trigger to their respective initial or at rest positions.

Abstract: A semiautomatic hand gun employs a segmented firing pin which reduces the possibility of the firing pin breaking due to fatigue.

Abstract: A semiautomatic hand gun having a unique take down assembly which allows the slide assembly to be detachably secured to the frame. This take down mechanism comprises a pin which may be removed without tools and which is captured in a disengaged position to prevent loss.

Abstract: A safety mechanism for a semiautomatic hand gun simultaneously prevents the firing pin from moving forward and the hammer from impacting the firing pin.

Abstract: A ball bearing hammer actuator comprises a hammer lever which is connected at the one end to the hammer and which is connected at the other end to a shoe which is slidable in relation to guide surface having a U-shaped cross section. The guide surface is provided for by a portion of the frame which has a generally U-shaped cross section. The shoe of the ball bearing hammer actuator includes a body having a generally rectangular shape which is designed to fit within the U-shaped guide. The shoe fits within the guide with a small clearance, the clearance allowing for use of ball bearings. Two edges of the body of the shoes include elongated recesses. The recesses receive a plurality of bearing balls therein. The bearing balls protrude from the bottom of the shoe and the sides of the shoe. The bearing balls are in contact with the walls and the floor of the U-shaped guide. A spring mechanism urges the shoe upwardly.

Abstract: A semiautomatic hand gun which may be fired in a double action manner or a single action manner is disclosed. The gun includes a combined system having single and double action control bars located at opposite sides of the frame.