My 2 cents....get a US made bbl and have it cut and threaded same as a HKtac45. Now you can have a wide gamut of cans to consider including HEMS45, KAC, Gemtech, AAC, QSM, etc.
As Renegade said, you can't own the B&T. AAC has not had any UMP silencers in stock in the last twor or three years according to an employee there. Gemtech is the only option. Here are some pictures and video for you...Thanks for the ideas guys. I had considered that, but just didn't want to spend another $250 on a barrel. I could sell the UMP barrel and get some money back. The modularity of the threaded barrel and availability of more suppressors may make up that difference, I guess.
I'd still like to hear if others have experience with the the UMP QD suppressors though.
This is the way to go for a UMP9. There are many smiths who can thread it 1/2x28RH so you can the install the TROS adaptor.On a different note I just got off the phone the Gemtech. The suggested that I thread the barrel and add a 3-lug adaptor so I could use their Raptor II suppressor. Do any of you have experience with threading a 3-lug adaptor on a barrel that typically didn't come with it?