one of the engagement position and the disengagement position application_number US 35842506 A description reference is now made to the drawing figures where it is understood that like reference numerals are drawn to like elements examples are described herein below of various embodiments of an integrated safety lock preferably for use with a semi automatic hand gun the present invention can be a replacement component for use with an original equipment manufacturer oem handgun however it can also be included with an oem handgun or other firearm it is appreciated that the present invention can be adapted to other applications as would be understood by persons having skill in the art all without departing from the invention the present invention is used in a conventional type weapon e g an m1911 45 caliber pistol such a weapon is loaded when a round i e bullet enters into the firing chamber to enter the round a slide is pulled back from a receiver allowing a magazine or clip that holds the rounds to push one upward into the firing chamber when the slide is pulled back it also pushes back the weapon 39 s hammer and down on an armature i e a mainspring cap that engages a spring to a depressed position where the.