All, I am looking for a house/truck carbine in 45acp that will feed my G21 magazines. I have only seen one, but somebody may have a suggestion or lead on another. Many Thanks!
I think Keltec has one. LoneWolf is making a dedicated AR15 based one and then their is the KRISS which is pretty different.
Unfortunately, there isn't one that takes Glock 21 mags. The Kel-tecs are only in 9mm & .40. As it is, the only .45ACP carbines that I can think of are the HK USC, the Beretta CX4 and the HiPoint. Oh, and the KRISS, if you've got a few thousand to spend. I'm sure there are others, from smaller makers, but those are the mainstream guns.
Check out Thureon Defense. Glock mag 45 ACP http://thureondefense.com/index.php?option=com_content&view=article&id=1&Itemid=4 I will have one someday but more than likely it will be a 9mm.
Lone wolf disdtributors is supposed to be coming out with a .45 carbine that feeds glock magazines around the first of next year. That will give me time to save!