Fire control lockout assembly for semiautomatic firearms providing single shot operation thereof

A method of operating a firearm for single shot operation, said method comprising the steps of:

• a) equipping the firearm with a fire control lockout assembly having a trigger assembly with trigger body having a sear at a first end thereof, a hammer configured to be engaged by said sear to hold said hammer in a ready position for firing the firearm, a disconnector with a disconnector body having a forward segment at a first end thereof and a rearward segment at a second end thereof and a safety selector with a moveable switch lever and a barrel connected to said switch lever so as to move therewith, at least one of said forward segment of said disconnector and said trigger body of said trigger assembly being sized and configured so as to provide a contact spacing that requires manual movement of said safety selector to said safe position in order to place said hammer in said ready position;
• b) engaging said hammer with said disconnector so as to prevent said hammer from being moved into said ready position;
• c) releasing said hammer from said disconnector by manually moving said switch lever to place said safety selector in said safe position and press said barrel downward on said rearward segment of said disconnector to allow said sear to engage said hammer and hold said hammer in said ready position;
• d) moving said switch lever to a fire position;
• and
• e) firing the firearm by pulling a trigger of said trigger assembly to disengage said sear from said hammer so as to pivot said hammer.

A method of converting a semiautomatic firearm having a fire control group and a safety selector to single shot operation, said method comprising the steps of:

• a) removing the safety selector from the firearm;
• b) separating at least one of a disconnector and a trigger assembly from the fire control group, said disconnector having a forward segment and said trigger assembly having a sear with a sear contact surface at an upper surface of said sear, said forward segment of said disconnector and said sear contact surface of said trigger assembly defining a first contact spacing therebetween;
• c) positioning at least one of a modified disconnector and a modified trigger assembly into the fire control group in the firearm, said at least one of said modified disconnector and said modified trigger assembly selected to provide a new contact spacing that is greater than the first contact spacing, said new contact spacing being selected so as to prevent upward movement of said sear from moving a forward segment of one of said disconnector and said modified disconnector sufficiently upward enough to release said hammer from said disconnector in order to prevent placing said hammer in a ready position that would allow firing the firearm;
• and
• d) installing a modified safety selector having a moveable switch lever and a barrel connected to said switch lever so as to move therewith, said modified safety selector installed so said barrel thereof will engage a rearward segment of either said disconnector or said modified disconnector and press down on said rearward segment upon movement of said switch lever of said safety selector to a safe position to release said hammer from engagement with said one of said disconnector and said modified disconnector and place said hammer in said ready position.