But have you ever priced the Kriss extensions? You can get 27rd Glock 21 mags here for $20: http://www.botachtactical.com/vigl2127ma.html
Almost 2 for the price of 1 with the Botach Tactical mag.Only drawback might be losing the Ambi mag release if you are using them in a 21SF. Doesn't say if they are Gen 3 or Gen 4.
I guess the JR carbine would be ok , I mean if you carried a Glock.....
ohio is getting ready to do away with carring law. That sucks.