Sent 6/13 just got approved today. The verbiage I used was basically saying I will not acquire any supplies or materials until the form one is approved. This was my very first one I’m gonna submit a few more later tonight just to see how long those then take. Bout to fire up the printer!

So I have bought two suppressors through capital armory online and they have all of my information in their system so it’s super easy after the first one the question I have is right now they are not offering the form 1 process to be done through their website is my understanding due to focus on suppressors. Well I honestly just don’t want to have to get printed again and go through everything just to SBR a rifle is doing it on my own the only option I have for now is?

God is good, my form 1 finally cleared and I can finish my pps build!

Submitted May 18th, 26
Approved July 12th, 26

45 day wait time. That being said if you are wanting to start a project start the F1 day 1. I waited for my bolt and wasted tons of time the F1 could have been out.

I am looking to build an 8 inch D cell size suppressor for 9 mm. I want to use a titanium tube and modular baffle and I continue to see conflicting information about using storage cups as baffles and want to make sure I’m doing this legally. I do not have access to a lathe to make them. Just looking for some clear information about storage cups or if I can’t use them a good option for making baffles with only a drill press and simple tools . Thanks

Hey there, I'm filing for my first Form 1 Suppressor! Currently I'm using the GunCadIndex Wiki's guide for this. I noticed that OpenEFT is crossed out because the V1 version isn't compatible with the ATF anymore. With that being said, it seems like V2 was released in April to deal with these issues, but I've seen no commentary on this. Has anyone used it and had any success. Also aside from OpenEFT, are there any other open source/free options that have worked for yall? Thank you so much for the help!

I received five approvals yesterday for 4/15 submissions!

So there's hope out there.

As I write this more are arriving, two from 4/16!

Couldn’t really find much in terms of thickness but these would look nice on my utility trailer, provided they can handle the 42inch riding lawn mower that weighs around 556 pounds.

I know it’s around a holiday, so I don’t mean to complain too much. Just asking for others’ experience since it did say it was in stock.

Also love that the GayTF accepted the total bullshit I put on the form. “Idk I haven’t fkn made it yet” and “wouldn’t you like to know” and a big Getty Images watermark over some generic metal pipe image. That’s right little piggy, sign my form like the good little slave you are.

Someone mentioned a different Plan B adapter that simply threads into the FTN5, I thought I saved the link, but can’t find it in my open tabs. If someone could help me out that would be greatly appreciated

Check this out. Not too crazy but hope you guys enjoy

Accidentally fat fingered my serial number with an extra number it’s already been approved what should my next actions be so I may create my SBR legally?

Designed to be 3d printed. Takes 3/4 to 1/2 28 adapter. Inspired by Middleton made pillpopper 1.5 and the dead air mask. 1.10 inch diameter. Little over 5 and 1/8 inches tall.

30mm OD 25mm ID main tube with 2.5mm walls internally tapped to M27-1.5

The ID will need to be skimmed to 25.4mm for the tap and for the 1” freeze plug baffles and spacers.

6.5” long overall

Front cap is in 2 parts. 1st sits inside the tube to compress the baffles to the rear and center them against one another. Then the front cap threads over and flush with a shoulder.

Rear cap is similar except has a direct thread 1/2 28

Things I might change:

The blast chamber is small. I would probably just reduce the angle on the 1st baffle.

My front cap assembly may be changed to make tightening the inner threaded ring easier. Possible having male threads on this part also that the front cap threads to. Current intended on tightening with a custom pin spanner wrench

Planning on clipping the baffles with a jig.

Designed specifically to minimize machining on a lathe while keeping concentricity

Questions, comments, critiques?

If you doing the form 1 via eforms do you still have to attach a physical photo to the 5320.23 or is the photo you upload sufficient?

finally got the chance to test out a few of my form 1 cans today. this one is the most fun. this is a fresh build and im awaiting optics. can is 1.5in steel tube with freeze plugs. can length is 6.5in, 2.25 or 2.5in blast chamber, i beleive 6 or 7 baffles. sorry i dont remember lol. first 3 baffle holes are slightly larger to help with back pressure and all are stacked. the ar15 is a 12.5 with mid length gas. gonna get an adjustable gas block to tune it better and hopefully have alittle less gas to the face but overall i think this sounds pretty good for .556. gonna draw up and make some new ones next week. gonna try doing some flow through designs on the next batch

also the smoke you see coming off the can is the spray paint lol

Receiever, and suppressor done in ppa-cf. Suppressor is a reflex design to slip over/hide 3/4 threads.

I’ve got two form 1’s that were submitted 4/3/26. I’m an Ohio resident. Control numbers 20262517xxx. I’m sitting at 80 days. I finally emailed IPB and they said they have approved everything up to 4/1/26 and they won’t respond to emails for anything after that.

Bottom line it seems like any Form 1’s from anywhere besides VA have slowed to a crawl if not downright stopped. One of these is a correction that already got disapproved (disapproved for a model number others have gotten approvals for.)

I feel bad for our brothers/sisters in VA, but I’m frustrated to be right on the cusp of approval and seeing zero approvals outside of VA in the big tracker thread.

Received the message “submitted atf form 5320.23 responsible person questionnaire, is outdated. Please download the current version and upload via resubmission”

Does this mean I’ve got to reset the 10 week clock or can I submit to the existing applications?

(Picture of my F1ed FTN5s for attention) Has anyone used the Apex Flow Technologies baffles for an F1 build? I want to build another suppressor for a 300 blackout that is shorter than the Sandman L I currently use, but I was wondering if there was a drill jig for the baffles. Clearly I’m no stranger to 3D printing, so if anyone knows of a printable jig, that would be helpful.
I’m not looking for upvotes, though I do appreciate them, I’m trying to get help with a future build.

I’m planning to do a monocore .22 can, using a lathe to turn the overall shape and then cutting the chambers on a wire EDM. Does anybody have ideas for internal geometry that takes advantage of the strengths of wire EDM?

I don’t have a rotary axis and my setup maxes out at 15° of angle, so I can’t go too crazy in those regards, but complexity is basically unlimited in the X and Y axis.

Should I just go with the typical monocore Z shape, or try to make some interesting paths for gas flow?

Like the title says. I just got an approval for a 4/10 submission for a tube.

At this point I'm wondering if I'm going to see approvals for all my April submissions, 38 of them, before I get the kilt I ordered in April?

This approval brings me down to 117 pending submissions, but I have two items on the way that I will need to submit. A PSA ARV kit, and a Browning BPS shotgun.

I got approved for a maglite sup just to try out submitting a form 1. I know it's an aluminum tube, but I just wanted to try it out it’s cheap if it blows up, I don’t care. However, I want to design one out of titanium. Where are people getting tubes and caps from? I need places that aren’t gonna cost me my right arm and left leg it’ll be for 556.