Need adjustment knob for MEC free position buttplate

If the unit is metric, then the Allen head screw I’d bet it’s a 3, 4 or 5mm screw. Try your local hobby shop that sells radio control cars and airplanes. They sell lots of metric hardware. If you find one but it’s too long just cut it down using a Dremel with cutting wheel. A shallow head mike be hard to find.



PS, it’s rare but not impossible that it could be 3.5, 4.5 or 6.5mm but that’s usually used.

Try here if you know the thread size.

https://www.mcmaster.com/knobs/system-of-measurement~metric/

Search "Adjustable Handles". That will allow you to locate the lever position out of the way of your shoulder and arm. Quarter turn, make your butthook adjustment, and cinch it back.

Looks like it belongs there. Very nice.

The best part is now you have a place to order a host of hardware and orings.