sentences:  Browning and Colt also adopted the suggestion of the U.S. Military to add a slide stop to the design.The problematic pivoting rear sight safety of the M1900 which swung back and down to physically block the arc of the pistol's hammer was also removed.Another shortcoming in the M1900 design was brought out by trials held by the British military, who discovered that the pistol had a tendency to fire when dropped.