Help needed on PR900 - Stormrider - Chaser etc trigger

[doctorxring]

I've got a PR900Gen2.   I can adjust the 2nd stage on the gun to a satisfactory condition but it will not hold.  The adjustment screw is very easy to turn and it evidently backs out after a few hundred rounds.  I would like to put another screw in on top of it to keep it from backing out.   Does anyone know what the size of these adjustment screws are ?

thanks,   Chris

pics attached

[Ronfiveo]

Most hardware stores have screws and ways to match sizes.
Take one down to the local hardware store and match one up, then try it and see.

Ron

[Furia]

I've got a PR900Gen2.   I can adjust the 2nd stage on the gun to a satisfactory condition but it will not hold.  The adjustment screw is very easy to turn and it evidently backs out after a few hundred rounds.  I would like to put another screw in on top of it to keep it from backing out.   Does anyone know what the size of these adjustment screws are ?

thanks,   Chris

pics attached

That thread is metric M3. M3 set screw goes there nicely.

[doctorxring]

Thanks guys !

Set screw set on the way . . .

Chris

[Back_Roads]

 Tip for keeping adjustment threads usable but no creep, put a coat of liquid electrical tape on the threads let dry then thread in and adjust, a dab more can be added to keep a specific set.

[avator]

I've used a drip of birthday candle wax. The tip of a soldering iron melts it back out if needed.