The Mark IV features a simple, one-button takedown for quick and easy field-stripping. Features contoured ejection port; sighting system features a drilled and tapped receiver for Weaver or Picatinny style rail for easy mounting of optics; ambidextrous manual safety can be converted to left-side only with included washer; conveniently located push-button magazine release on the left side of the frame; pressing a button in the back of the frame allows the barrel-receiver assembly to tilt up and off the grip frame without the use of tools. Includes two magazines.