I have 3 all from Silencer Central. I spend some time learning about them at a gun shop and from others who own them. That co. sells many brands at prices all over the pricing range. Mine are all they in house name Banish. What I think is the best part, they do all the work with you over the phone and through the computer. You make appointments to get phone calls as the process happens. The time it takes depends on a few things, having a gun trust or just for you are 2 examples If you list only you, it should go faster. BUT here's the thing, no one else has legal right to possess the suppressor if only you are listed. If you pass, your family can't possess them without becoming a felon. So, the trust to me is important. My 2 sons are listed. No spouse since I don't have one. Trusts can be changed if/when needed.
My sons can possess the suppressors without committing a crime of illegal possession. We have copies of the ATF stamp documents on our phones. I have made more paper copies.
I have the small .22lr suppressor, a 30 caliber that's 9 inches long and one that's for full auto 5.56. The 4.5 inch .22lr and the 7.5 inch 5.56 when used on a .22lr rifle both sound like they reduce the sound levels about the same to my and my son's ears. That tiny free .22lr suppressor works darn well. As mentioned, free is not totally free, but still saved about 550 bucks when I got mine.
BPJ, text or email me if you want more details, we could set up a phone call.