It will be in prison for 10 to 12 months or more.
FIFY. I submitted in July before the deadline and they are telling everyone now that it's 10-12, and I bet it will be more than that in the long run.
OP, I bought a SilencerCo Omega for my ARs. It can be direct-threaded to your barrel, or you can mount an adapter and make it easy to swap between guns. You can also get 5.56 or 7.62 end caps for versatility. Check out the Hybrid as well, it can handled up to .45 caliber and do pistols and rifles.