Re: Timney Trigger Screws
4-40 is a standard machine screw size. You might have trouble finding an allen set screw type, but try your local hardware store, and look in the yellow parts drawer section under set screws. In a pinch, until Timney comes through, you could use a regular screw head 4-40, if you can get one thats just the right length, so it doesn't stick out too far to hit the stock. That screw is the sear engagement screw. Run it in until the trigger trips by itself, then back off 1/2 to 1 turn, dab with drop of nail polish to hold the adjustment.