Quarter Circle 10 9mm AR

Suddenly I got the bug for one of these and threw down on their "Rider" which is based on the Colt pattern.
It takes modified Uzi mags, 20rd or 32rd

Some of the AR9's are Glock pattern, taking Glock mags.
I think that the straight, Uzi sub-machinegun mag looks pretty cool, they're cheaper and they run.

Quarter Circle 10 makes the premier 9mm lower that is not an adapted AR lower.
Angstadt Arms makes a sweet Glock lower as well.
QC-10 makes both patterns.

Mine looks like this except 7.5" (5.5" shown), M-Lok handguard and Magpul grip.

Reminds me of this guy.
No fairy Glock mags here....