Hey all, I have an sot and mainly only use it for small amount of suppressor sales, I'm doing a suppressor for a very small town police chief, and he is going to check out a ump45 what is proper wording to submit with sot for making it all legal? Any help would be greatly appreciated, my guess would be on their letterhead describing make model with his contact info and signature, just not sure if there is a correct format I need to follow, thanks in advance