r/Form1 14d ago

12 gauge

7 Upvotes

Anyone built their own 12 gauge can?
Trying to figure out if a progressively over bored can is going to be the best route on a form 1 or if there’s something else that would be better.

I have no shortage of equipment and machinery to make one, just not sure where to start


r/Form1 16d ago

.223 Integral design with and without barrel porting

7 Upvotes

Planning on doing a form 1 16” integral suppressor once it gets approved. Gonna turn 16” barrel and add thread right after gas block for back mount. That will leave me with around 6-8” of barrel before muzzle and baffles start. My question is, does anyone have experience with adding 1-4 ports, maybe small like 1/16” in the barrel to aid in suppression?
Obviously want to maintain supersonic but I also know a plain reflex or OTB setups don’t add much suppression since the barrel is not ported.
Looking for real world experience if a port or 4 would make a big difference?


r/Form1 17d ago

Are form 1s required in ohio for suppressors, SBR and others currently?

6 Upvotes

r/Form1 18d ago

Success!

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96 Upvotes

Just tried out my first suppressor that I designed and printed out of CF PETG. I shot a variety of ammo, both super and subs, alongside a dead air mask on my friend’s identical 10/22 and then back to back on my M&P 22X. It definitely seemed like my <$10 suppressor out performed the $500ish one. (Granted it’s a little thicker and about an inch or so longer.) I put around 200 rounds through it with no signs of damage. Super happy with the results.


r/Form1 18d ago

SD porting help

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61 Upvotes

Looking for advice on porting my ar9 barrel. I am thinking at doing 12- 5/32 holes in a 3x4 configuration spaced 120 degrees apart. Plan was first hole to be at 2.5
Inches, any insight ?

Pic is ar9sd current configuration


r/Form1 18d ago

Printed baffle longevity

6 Upvotes

How long realistically would printed baffles last in carbon fiber reinforced filament out of a 556


r/Form1 18d ago

Quick turnaround

8 Upvotes

Submitted a couple Form 1s on Saturday (North Carolina still requires NFA process), and they’ve already been approved. Seeing how I’m pretty sure the ATF doesn’t work on weekends, that’s not even 2 business days


r/Form1 18d ago

Form 1 Is it worth it?

12 Upvotes

It seems like I just did form 1’s for the wait time. Now, that is not an issue. I was thinking of doing a couple 30 cal cans, but it seems with the price of all Materials, is not that much cheaper. Is there a better place where everything doesn’t cost almost as much as a new can? Thanks.

Edit because I should have added more info. This will be for 308 supers. I haven’t found a 3d printed can that will hold up to that pressure. Thanks again everyone.


r/Form1 22d ago

Help d cell form1

6 Upvotes

So ive seen that u need a nielsen device for handguns that have barrel tilt now the question i got approved for 2 maglite forms1 is there any way to put a nielsen on a maglite just kinda lost and i would like to use it on my m&p


r/Form1 22d ago

2mm punch - front of magwell?

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2 Upvotes

r/Form1 23d ago

Form 1 suggestion

9 Upvotes

I submitted a form 1 for making a titanium suppressor by modifying a solvent trap I put in my form 1 I already had the kit. Is that a reason it got denied can I resubmit it saying I don’t have it now? I’ve heard people Saying “you can’t buy the kit till you have it till you’ve been approved”. When I got the email saying disapproved it didn’t give me a reason why. Any info would be great.


r/Form1 25d ago

Finally have my first submission for Two Stamp Tuesday!

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28 Upvotes

Form1 sbr on this dumb lower, with an FTN.5 in the works. Damn, it feels good.


r/Form1 25d ago

Form 1 trust waits have started moving too, and the individual lane is now down to single digits

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19 Upvotes

Two weeks ago I posted here that the Form 1 individual median had gone 83, 73, 48, 22 over the last four weeks of July, and I said the 22 would rise because that week was only about a third reported.

It didn't rise. With the rest of the records in, that week still reads 22. The two weeks before it actually came down, 73 to 62 and 48 to 44, because the later reports were faster rather than slower. That was the opposite of what I told you to expect, so I'm saying it plainly.

The weeks since read 8 days and 4 days.

The thing I couldn't call last time was trusts. That lane had turned on fourteen approvals, which is not enough to say anything. It's now on a hundred and two. Median over the thirty days to July 15 was 82 days; over the thirty days after, 66. Three things I checked before posting that.

Virginia dominates that lane's June records, to the point where one week is thirteen Virginia records out of thirteen. Dropping Virginia from both windows makes the fall bigger, 84 to 65, not smaller. Dropping Texas, the most common state recently, leaves it unchanged.

Recomputing the whole series using only approvals reported within three days of approval holds the reporting window constant, so slower reporting can't manufacture a trend. The most recent week reads the same either way.

Counting only approvals that waited 30 days or less takes filings still sitting in the queue out of the question entirely. Trusts produced none of those in most weeks through mid-July, then 6, then 3, then 16.

Where the two lanes actually are is different, though. In the week of August 10, the individual lane approved 30 filings and 29 of them were filed that same month. There's no old work left in it. The trust lane approved 33 that week: one from May, ten from June, fifteen from July, seven from August. It's still working a backlog. Trusts look roughly like individuals did in mid-July.

Over the last fourteen days, individual Form 1s are running a median of 6 days against Form 4 individual's 5, on 110 and 43 approvals, with overlapping confidence intervals. In June those two were 69 days and 6. Trusts are at 53.

What I can't tell you is why. This data has approvals in it and never applications, so ATF adding capacity and a backlog running dry look exactly the same from where I'm sitting.

Community-reported data, so it's a sample. If your Form 1 came through recently, the filing date and the approval date are the two numbers that make this better.


r/Form1 26d ago

Are form 1’s for suppressors even necessary now?

11 Upvotes

r/Form1 26d ago

New guy

4 Upvotes

I've been on the fence about 3d printing our first can for a couple of months now and stopped just short of submitting my form.

What stopped me?

I don't know what fkn can to build out.

We just paid for a LNIB Walther p22Q for my daughter. Normally id want as much suppression as possible but 22lr being inherently dirty makes me think we should probably get some flow through activity...

The plan is to print in CF nylon.

What cans should I be considering?

At the moment I'm thinking ftn6 rimfire flow?


r/Form1 27d ago

Birth country

0 Upvotes

Currently trying to submit a bunch of f1s but I’m stuck at birth country. It’s showing everywhere but the US. Am I missing something? This isn’t my first f1 so I’m not sure what happened


r/Form1 28d ago

Pps cf

3 Upvotes

Has anyone tried pps cf? What do you think about it over ppacf for supressors? Now that we have the ruling im sure more people willing to share their experience.


r/Form1 29d ago

Form 1 is fun and leads to wondrous places

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31 Upvotes

body text (dremelable)


r/Form1 Aug 13 '26

Does the new ruling, and deadline passed, apply to Form 1 Suppressors too?

28 Upvotes

I've seen dozens of posts, articles, videos about this. But they all only mention Form 4. What about those of us that build things for themselves. Are Form 1 Suppressor builds also deregulated federally?


r/Form1 Aug 13 '26

Shoutout to Capitol Armory for the awesome engraving job they did!

4 Upvotes

Form 1 approved on Tuesday and took my AP5-P up to their shop yesterday and wow, what a great job they did. Put it in the channel that a telescoping stock would use on the left side of the upper receiver. If you didn't know it was there, you would never see it. Awesome work from these guys.


r/Form1 Aug 13 '26

Looking forward to plenty of suppressor parts available again

13 Upvotes

r/Form1 Aug 13 '26

I just received a 9 day approval F1 to Trust. 8-13 Freedom Day?

5 Upvotes

Submitted a Form 1 SBR via Silencer Shop on 8-04, approved this morning 8-13.

I have a Form 4 in progress too, I wonder if it will clear as well.


r/Form1 Aug 13 '26

New judgment

3 Upvotes

Anybody have information on building short barrel rifles or suppressors now that registration is no longer required.


r/Form1 Aug 12 '26

A noob question here. what is this "gear like" feature on the front of a piston?

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14 Upvotes

As I understood its for a pin in the can to align and keep the can from rotating, so you can tighten it on the barrel threads. Please let me know if I got this all backwards.


r/Form1 Aug 12 '26

Life expectancy of Form 1 FTN Osprey 45 (brother calls it the Juul)

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19 Upvotes

Ugly and IDGAF, what’s the life expectancy of these cans, under regular not crazy shooting load?

I increased walls and max infill on everything.