I was wondering if anyone knows of a conversion kit to turn a Beretta 92FS into a carbine.

I've looked into the following options:
- KelTec Sub2000 and CX4 Storm Carbines
- EAA Roni (only available in NFA format or semi-useless "Recon" Uzi-style configuration at this time)
- Sig ACP, Hera Triarii, KPOS (not available for Beretta 92 -- all have NFA ramifications)
- Mech-Tech CCU (despite advertising a few years ago, still not available for Beretta 92)

None of them really is quite what I'm looking for (I want to avoid NFA SBR issues in particular, and want to avoid a seperate firearm like the CX4).