Adjustable dual stage trigger mechanism for semi-automatic weapons

Abstract

A dual stage trigger assembly for a firearm. The trigger assembly comprises a spring loaded lightweight hammer, a spring loaded trigger, a spring loaded disconnector, a spring follower for the disconnector spring and two adjustment screws that allow the user the ability to adjust the sear face of the trigger that is engaged with the hammer in the cocked position and adjust the force imparted to the disconnector by the disconnector spring.

1 . A hammer for a firearm that is configured to be powered by a hammer spring;
 said hammer being configured to be pivotally connected with a pin to a receiver of said firearm;   said hammer having depressed areas on sides of said hammer, said depressed areas being completely surrounded by extending flanges forming said depressed areas;   said depressed areas allowing said hammer to be lighter than a hammer without said depressed areas;   wherein said hammer can rotate through a given arc faster than said hammer without said depressed areas.   
     
     
         2 . The hammer as in  claim 1 ;
 wherein a section through said hammer is substantially in the form of an I-beam.   
     
     
         3 . The hammer as in  claim 1 ;
 wherein said depressed areas are perforated by an aperture;   said aperture causing said hammer to be lighter.   
     
     
         4 . The hammer as in  claim 2 ;
 wherein said sides of said hammer include a first side and an opposing second side, wherein said section is taken in a direction from said first side to said second side and includes at least a portion of said depressed areas.   
     
     
         5 . The hammer as in  claim 1 ;
 wherein said hammer includes a pin hole extending through said sides of said hammer for receiving said pin to pivotally connect said hammer to said receiver of said firearm.   
     
     
         6 . A firearm comprising the hammer as in  claim 1 . 
     
     
         7 . A hammer for a firearm that is configured to be powered by a hammer spring;
 the hammer configured to be pivotally connected with a pin to a receiver of the firearm;   the hammer defining a first side and an opposite second side, the first side including a first flange extending outwardly from the first side in a direction opposite the second side, the first side defining a first area that is depressed relative to the first flange, wherein a perimeter of the first area that is depressed relative to the first flange is completely surrounded by the first flange, the second side including a second flange extending outwardly from the second side in a direction opposite the first side, the second side defining a second area that is depressed relative to the second flange, wherein a perimeter of the second area that is depressed relative to the second flange is completely surrounded by the second flange;   the first and second areas that are depressed relative to the first and second flanges, respectively, being separated by a web and allowing the hammer to be lighter than a hammer without the first and second areas that are depressed relative to the first and second flanges, respectively;   wherein the hammer can rotate through a given arc faster than the hammer without the first and second areas that are depressed relative to the first and second flanges, respectively.   
     
     
         8 . The hammer as in  claim 7 ;
 wherein a section through the hammer that cuts through at least a portion of the web is substantially in the form of an I-beam when the section is taken in a direction from the first side to the second side.   
     
     
         9 . The hammer as in  claim 7 ;
 wherein at least a portion of the web defined between the first and second areas that are depressed relative to the first and second flanges, respectively, is perforated by an aperture;   the aperture causing the hammer to be lighter.   
     
     
         10 . The hammer as in  claim 7 ;
 wherein the hammer includes a pin hole extending through the first and second sides of the hammer for receiving the pin to pivotally connect the hammer to the receiver of the firearm.   
     
     
         11 . A firearm comprising the hammer as in  claim 7 .