Concentricity/perpendicularity is imperative
Tolerance stackups from four threads - barrel, outside threads; adapter, inside threads; adapter, outside threads; and silencer, inside threads - can lead to a baffle strike. Shoulder seat perpendicularity (or whatever seating arrangement the can uses) is vital. The errors add up. The longer the can the higher the chances for a very bad day. 
Also depends on how much leeway is built into the can via baffle clearance. I've seen 22lr baffle strikes and the only hint something was wrong was the point of impact changed three feet when the can was installed - I don't want to see a 308W baffle strike...
Just for cipherin', here's a list of specs put out by AAC for barrel threading - and note this is just for one male/female set of threads.
http://www.silencertests.com/threading/THREAD%20GUIDE_072709.pdf
I'm sure Doug knows to check this before shooting, but had to mention the possible ramifications.
Complete thread:
- FAL pictures -
Slow Hand,
2013-06-20, 03:58
![[*]](themes/default/images/complete_thread.png "Open whole thread")
- Very nice -
mcassill,
2013-06-20, 07:11
- Very nice - Slow Hand, 2013-06-20, 07:36
- Sweet looking FAL... -
Brian A,
2013-06-20, 08:25
- Yeah, I too think the threads would have to be kept seperate -
mcassill,
2013-06-20, 11:00
- Concentricity/perpendicularity is imperative - John K., 2013-06-20, 12:55
- Thread adapters... -
Slow Hand,
2013-06-20, 16:16
- Yep, that is pretty much how they looked in my mind... - Brian A, 2013-06-20, 21:40
- Yeah, I too think the threads would have to be kept seperate -
mcassill,
2013-06-20, 11:00
- you'll be wanted a cheek piece and lower mounts -
Rob Leahy,
2013-06-20, 10:32
- you'll be wanted a cheek piece and lower mounts - Slow Hand, 2013-06-20, 10:47
- you'll be wanted a cheek piece and lower mounts - Slow Hand, 2013-06-20, 10:48
- for me at least... - mcassill, 2013-06-20, 11:09
- I always thought a .358 Win FAL would be slick. NM -
Andrew,
2013-06-20, 22:51
- I always thought a .358 Win FAL would be slick. NM -
Slow Hand,
2013-06-21, 07:09
- A .358 works.... -
Hoot,
2013-06-21, 07:51
- Huh, on of the few antlerless hogs in Minnesota... -
Rob Leahy,
2013-06-21, 11:09
- Yeah, late season after the sheds... - Hoot, 2013-06-22, 22:30
- Huh, on of the few antlerless hogs in Minnesota... -
Rob Leahy,
2013-06-21, 11:09
- A .358 works.... -
Hoot,
2013-06-21, 07:51
- I always thought a .358 Win FAL would be slick. NM -
Slow Hand,
2013-06-21, 07:09
- Very nice -
mcassill,
2013-06-20, 07:11