Which one do you have? The older versions are pretty much built along the same lines as the Edge/Striker/1000 series rifles only with a less powerful spring in them and I believe use the same trigger.
The new, shrouded barrel version looks kind of like a smaller version of their AirTact at least in pictures and may well be built the same way including possibly the trigger?? While I own an AirTact .25, I've never seen anyone mention they have a new version Alpha.