I think we're saying the only TMP you'll find will likely be old and used. The KSC MP9 may be slightly better than the KWA, partly due to KSC's accurate trades, partly from a hope that they may have fixed the tiny problem the KWAs had with broken feed nozzles (personal experience). As for the folding stock, supposedly it's removable, but I haven't been able to get it off yet (That's what she said!).
Delenda Est Carthago