Tried that, there is zero in and out movement. I made a short video of what’s happening, see if this works. You can see that it essentially has three positions. I push it to the back and after it snaps the latch moves forward. When live firing the latch goes forward enough to block the hammer but not release the cylinder. In the video after the latch moves forward I actually pushed on the other side with my trigger finger to make sure the cylinder was not released.
Guess that didn’t work, try this link
imgur: the simple 404 page