Just Right Carbines are chambered in 9mm, .40, and .45, and they all take Glock mags, as does the Kel-Tec Sub2000.
Well, the .45 versions might use 1911 magazines, not sure.
But I have heard some iffy issues about the JR Carbines, but 90% of it is AR compatible.
'A Vote is like a Rifle; It's usefulness depends upon the character of the User.'-Theodore Roosevelt
'In a Man to Man fight, the Winner is He who has one more round in his magazine.'-Erwin Rommel