A PCC (in 9mm of course).
But now I'm starting to wonder why exactly. Cheaper ammo, is that all? Yes and no. Target practice? Yeah, now that makes sense.
But I like a firearm that also maximizes my benefit in a real world self-defense situation should one arise.
Then it occurred to me, why not something in the line of a magnum 9mm? The only one I could find that would work out well out of a short carbine or AR pistol type platform firearm would be a 300 blackout or 350 legend capable firearm.
Since 350 ammo prices are a lot closer to 9mm prices, and, well, 350L is like what I would imagine a 9mm magnum to be, hell yes!
9mm+p can be impressive out of longer barrels but nothing like a 350L.
I've decided. An AR pistol in 350L is now on my radar. The heck with a PCC in 9mm!