There are a couple of vents atop the barrel, within the ejection port, that allow powder gasses to impede the movement of the slide. The gas pushes forward while the slide tries to move backward. Thus the breech is kind of locked closed, until gas pressure in the barrel drops (as the bullet exits the muzzle).
DAMM.......that is soooo small. Maybe too small.
One of my Officers picked up the Micro this past Tuesday, when compared to my Secamp 380 its a pig, but it did eat every type of 380 we threw at it.
Now that Secamp has a 2 year wait again on the 380, this mite be a viable tool in its place
Love my Micro Desert Eagle, with Speer GOLD * Dot, it's the ticket.
In terms of actual dimensions, the Seecamp .380 and the Micro .380 are pretty similar.
Seecamp: length=4.25"; height=3.25"; thickness=0.91"; loaded weight=14oz
Micro DE: length=4.52"; height=3.71"; thickness=0.90"; loaded weight=18oz
What interests me is that, in a truly tiny pistol, small increments make huge differences in subjective "feel."
For instance, my wife's Kel-Tec .380 is quite a bit larger than either the Seecamp or the Micro, but it weighs so much less (only 11oz, loaded) that it subjectively seems to be about the same size as those smaller guns!