Looking at the drawing, I saw the difference in the our sears. Mine is a full GI issue, and on yours, the top, which holds the sear spring, has been grinded to be skinnier. Also, from the drawing, I can't see what the trigger could grip on that would let it pull the sear. The last thing is that the guide rails on the bottom of you sear have been cut off. The trigger is still mistifing me. The guy at Socomm said something about cutting the trigger assembly in half, but it didn't make a whole bunch of sense then, and doesn't now. I should have a drawing up at my website shortly about what I was going to do. Filename is 1919a4b.jpg.