Multi-stage match trigger assembly for use with semi-automatic weapons

A trigger lock for a firearm having a hammer, a trigger, a firing pin and an engagable safety mechanism, the trigger lock comprising:

• a trigger return blocking cam integral to the hammer, the trigger return blocking cam having a cam profile and three predetermined portions;
• a trigger limit pad integral to the trigger;
• the first predetermined cam portion being a root diameter;
• the second predetermined cam portion being a transitional surface;
• the third predetermined cam portion being a cam lobe;
• the trigger limit pad contacting one of the trigger return blocking cam portions;
• the safety mechanism being engagable with the trigger;
• whereby substantial contact of the limit pad with the transition surface when the safety mechanism is engaged prevents the hammer from striking the firing pin.

A trigger lock for a firearm having a hammer including a hammer hook, a trigger including a trigger hook, a firing pin and an engagable safety mechanism, the trigger lock comprising:

• a trigger return blocking cam integral to the hammer, the trigger return blocking cam having a cam profile and three predetermined portions;
• a trigger limit pad integral to the trigger;
• the trigger return blocking cam having three predetermined portions;
• the first predetermined cam portion being a root diameter;
• the second predetermined cam portion being a transitional surface;
• the third predetermined cam portion being a cam lobe;
• the trigger limit pad contacting one of the trigger return blocking cam portions;
• the safety mechanism being engagable with the trigger;
• whereby substantial contact of the limit pad with the cam lobe prevents the engagement of the safety mechanism after the trigger hook and hammer hook have been disengaged and the firearm has been discharged and;
• whereby substantial contact of the limit pad with the transition surface when the safety mechanism is engaged prevents the hammer from striking the firing pin.

A trigger locking mechanism for a firearm having a trigger including a trigger hook, a hammer having a hammer hook, and an engagable safety mechanism, the hammer being pivotable about a hammer pin, the trigger locking mechanism comprising:

• a trigger return blocking cam;
• the trigger return blocking cam being formed in an end of the hammer about the hammer pin and separate from the hammer hook;
• the trigger return blocking cam having a cam surface about its periphery;
• the cam surface including a root diameter, a transition surface and a cam lobe;
• a trigger limit pad;
• the trigger limit pad being formed in the front end of the trigger forward of the trigger hook;
• the trigger limit pad being engagable with the trigger return blocking cam;
• the safety mechanism being engagable with the trigger;
• whereby the root diameter and trigger limit pad are capable of contact when the firearm is cocked;
• whereby substantial contact of the trigger limit pad with the transition surface while the safety mechanism is engaged prevents substantial movement of the hammer;
• and
• whereby substantial contact of the trigger limit pad with the cam lobe prevents the engagement of the safety mechanism.