ACME North has a new in the box Keltec Sub-2000 carbine with one 15 round Glock type magazine in 9mm. 

This handy little carbine folds up for compact storage and will take all common Glock magazines. Comes with all pictured accessories. This would be a great option for camping, boating or other situations where compact storage plus the ability to use various capacity Glock magazines would be desirable.

Item number G-76758-1
                    G-76879-1