Two random questions FX Streamline

[jooleyen]

Got a used streamline by FX today and noticed two things immediately:

1. The trigger rotates - why and how do I stop it?

I assume a screw is missing or loose

2. I dry fire and notice a slight hiss after each shot. Why? Is this what a regulated pcp does? It’s my first regulated pcp 

 

[Tainden]

I had the same issue with the trigger on mine and couldn't figure it out, ended up asking the dealer. Turns out there is a tiny allen key screw at the bottom of the trigger arm, without good light and looking closely its kind of hard to see behind the trigger guard.

Not sure about the dry fire, I've never dry fired mine, or noticed a hiss

 

[tor47]

The hiss after dryfire is the sound of the regulator, quiet normal.

 

[elh0102]

The hiss after dryfire is the sound of the regulator, quiet normal.

I've had a bunch of regulated rifles, never heard a hiss. Maybe it's my hearing.

 

[lenweber2]

HUH! My hearing too. My son hear that? Me no.

 

[Long_Gun_Dallas]

Regulator hiss is normal, trigger should have a tiny screw hole on the trigger blade it's-self. Is the screw missing?