PTW: make semi-auto only
 

If you have a Systema PTW and you want to make it semi-auto only, with no ability to fire either burst or auto, to use, say, as a high-FPS sniper rifle or designated marksman rifle:

Cut the black wire that runs from the trigger to the EL-001 board (the larger of the two boards just forward of the gearbox).

A less permanent mod would be to solder a small toggle switch into the black wire and flip the switch to enable/disable sniper mode.

Enjoy!

Or block the selector plate with a little square of aluminum or something. It's more elegant because you won't even be able to switch to FA.

You can also use a small set screw to block the selector rack gear from moving. I believe this is what Systema does for semi-auto models, but it requires you to remove the gearbox from the gun. A little piece of metal will work there as well.

http://www.systema-ptw.com/Forum/for...TID=44&KW=semi

http://www.systema-ptw.com/Forum/upl...33429_semi.jpg