When you pick the gun up, hold and sqeeze. This is what cocks the gun. Squeezing the it also serves as the slide release. Once you release the sqeeze cock, the firing mechanism is disengaged. So, you have to keep tension on the sqeeze cock as long as you want to keep firing.
I have one and love it.
Yes, reloading is FAST.
Slide locks back on an empty mag.
Drop the mag, (release grip)
Insert fresh mag,
Squeeze grip, and the slide releases.
Note, be sure it’s pointed in a safe direction when releasing the slide, as with any pistol.