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

This handy little carbine features a Picitinney rail forend and multiple magazine inserts for the following pistol mags: Beretta, CZ, S&W, Sig Sauer and Canik.
The rifle folds up for compact storage. The carbine with one S&wW type metal magazine, mag inserts, allen wrench and all pictured accessories.

Item number G-76723-1