Had some one ask me what pressures does a 6.5 SAUM run? Said he was building another home made Suppressor. I asked him how long it took to get a Stamp for a home made he said 15 days on the last one.
Just made me curious on the rules about building your own?

1. Submit paperwork (include plans)
2. WAIT for Approval
3. Obtain materials and assemble (cannot keep extra parts (tube, core) on hand - end caps with different threads may be OK)
4. Outside tube needs to be marked with maker's name, location
5. Use and enjoy

Same as an SBR. Submit a form one and build it. Just have to have a plan before, and be very careful about "extra parts" and make sure your length and caliber are correct.

I know several people who have built their own, but not legally.

It’s a nfa form 1... search and you’ll find a ton of into about it along with kits so you don’t have to machine all the parts.

I’ve done one. Bought one of the premade oil catch tubes full titanium with end cap threaded. Once the Form1 comes back you drill out the baffles and end cap after you get the tube engraved.

https://www.silencershop.com/atf-wait-times

Currently, they aren’t saving much time it appears.

The e file system was still working for form 1. Its typically under a month. Downside right now would be find a place to do fingerprints to send in.

How much did the build cost you?

I can’t remember off the top of my head. Think it was $250ish plus the $50 engraving.

Here is one of the websites, but you can google Solvent Trap and there are several out there. Some have QD systems too.

https://solventtrapsdirect.com

So you're basically drilling some holes? (lol)

Yep pretty much

Is it worth it performance wise? I can source the engraving for free.99, would totally be worth it.

I haven’t shot it yet. I outsourced my drilling to a guy with a lathe to make sure it was done correctly and make sure to find Center on the end cap since there is no dimple. I haven’t gotten them back yet. He has been swamped with other things for a while now.

Please be careful.

I believe ATFE took a dim view of outsourcing the finish work on 80% receivers. I'd worry they might do the same on what is effectively an 80% Silencer.

I was intrigued so I read up on it. You can buy all the parts before or while you're waiting on your Form 1 to be approved. You can not make it able to suppress sound until after approval. Then it's just drilling holes. 100% legal.

From the BATFE:

If the applicant on the Form 1 lacks the skill, ability, and/or equipment to manufacture the NFA firearm, the applicant, after receipt of the approved Form 1, can have the firearm created or modified at a premises other than shown on the approved Form 1 as long as the creation or modification was done under the direct oversight of the applicant, thus having the applicant retain custody and control of the firearm. If the location is outside the applicant’s State and the firearm being made is a short barreled rifle, short barreled shotgun, destructive device, or an unserviceable machinegun which is being reactivated, the applicant will also need to request permission to transport the firearm interstate as required by 27 CFR 478.28.

I left out the VERY important word "not". I didn't notice it till you quoted me. "You can NOT make it able to suppress sound until after approval."

I built one with a pre-machined Ti tube. The end cap had a center point machined in so I knew were to drill. My guts are Ti spacer, Ti valve spring covers for my blast baffle and my BB+1. The remainder of my baffles are formed and drilled SS freeze plugs. It sounds about the same as my SilencerCo Harvester when used on my .243 or my 6X45 AR.

Thanks for that info.

I know of a shop that was selling “build kits” that were ready to be put together. Problem was they were 100% ready to assemble with no machine work necessary. They got in trouble. Not sure the outcome on people who had done paperwork before hand but I’d imagine there will be some issues. From what I’ve seen it wouldn’t be that hard to make one, may not be as good as someone’s years of research but would help. If I had easy access to a machine shop and tools I’d probably take a go at building one.

But time was running less than 60 days and sure beats waiting a year.

It’s important to point out you CANNOT do any R&D before settling on length, number of baffles or anything else regarding design.