I'll tell you who laughs, it's the rifle owners in the UK that can by a suppressor cash and carry (provided they are licensed in that caliber). Pretty sad when Socialist Europe actually makes suppressors more widely available than we do. I'm sure they are having a good laugh.Options..... First laugh of the new week right there!
Options... call ATF and nicely ask to be updated. If they say its processing, your option is to wait. If its not received by them, resubmit. Pretty much all your options!
Just an FYI, 5 months is nothing. Let me know when you pass a year! Then it will start getting ridiculous.