got a MP5 clone pistol few weeks back and would like to get the barrel threaded, anyone know where I can send this to be done? I contacted parabellum combat (ghilliebear on HKPRO) And he said he doesn't do that and since it went from pistol to rifle and back to pistol that it would be an illegal SBR. So now I'm looking for someone to thread my barrel to run my Osprey 9, this was posted in my thread asking about going back and forth ATF Ruling 2011-4. any suggestions where I can get this done? Thanks

Don't tell anyone about how it's configured now or has been configured in the past. Just ask if you can get your barrel threaded.

No need for TMI.

You can go pistol-rifle-pistol. You CANT go rifle-pistol. Thompson contender won that court battle. 

Also contact Morgan Richey @ class3 machining. He can thread anything and does amazing work. 

Yea go to Morgan. I used him for my mpx chop n thread. Great price. Great guy.