I've noticed that many of the better semi-auto brands have after market replacement barrels that make it possible to shoot different calibers in the same gun.
So I'm at the gun store this morning ordering a Polish P-64 9mm Makarov pistol. I've heard good things about them. This is the one I ordered.
I picked up a box of 9mm Mak's as well, so I'm ready to head to the range when it arrives, and as I'm looking at the shells, I notice how similar they look to .380 acp.
A little research reveals that the Makarov is a tiny bit longer than the .380, but balistically it's near identical to a +P .380.
So why the heck hasn't Kel-tec or somebody taken advantage of this fact to adapt an existing .380 into a 9mm Makarov with a simple barrel swap.