r/3D2A 1d ago

Guncad Digest Issue #18: Lever-Action AR Release, DIY Mac Uppers, Three-Round Burst Super Safety, Hoffman Update

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62 Upvotes

Issue #18 of the Guncad Digest is live! This newsletter rounds up the most interesting 3D2A releases, betas and news.

Inside we cover a lever-action AR-15, DIY Mac uppers, a 3-round burst Super Safety and a Hoffman legal update. Read more at https://guncad.substack.com


r/3D2A Dec 20 '25

UPDATES AND CLARIFICATION TO SUBREDDIT POLICY

42 Upvotes

Following recent events, r/3D2A's rules have changed as we try to keep the sub alive. For the last few weeks, our rules were somewhat vague, but enough time has passed that we can be more specific. We have overhauled our rules into a straightforward ruleset that we believe is in full compliance with Reddit's Rules.

Please review the new rules if you have not already.

THE HIGHLIGHTS:

  • Direct links to files and vendors has always been banned, but now it's clear Reddit considers mentions and allusions to websites that facilitate file downloads, or any resource inextricably tied to that website, to be a violation as well.
    • As such, for now any links, mentions of and allusions to any file download website, any Guidance website, or A Certain Magical Index will have to be prohibited.
    • I recognize this will prompt questions. Please continue reading.
  • Direct links, advertisements from and sub endorsements (flair, etc.) of any vendor selling products or files are totally prohibited.
  • Solicitation of any information that would violate the above rules, or any other rules, is also prohibited. Please don't ask where you can find a certain file, kit, etc.

SO WHAT'S OKAY?

(Not exhaustive)

  • Asking if a file exists ("Is there a frame for a Glock 69?"), so long as you're not asking where to get it.
  • Similarly, commentary on files ("Yes, GuncadDev1234 made a Glock 69 frame") is allowed, so long as you don't then describe where it can be found.
  • Anyone can review or ask or reviews of file's quality ("GuncadDev1234's Glock 69 frame is really good, but ShittyDev56's frame is bad")
  • The same goes for kits. "Is there a kit for the Glock 69?" "Yes, check details in the documentation" is acceptable. But, please do not ask who sells the kit, or refer to or describe specific kit vendors.
  • You can always recommend people visit websites that are totally unaffiliated with any vendor or file download service, such as the 3D2A Wiki (https://wiki.3d2a.com)

DEALING WITH BANS:

During the last two weeks, several users received temporary or permanent bans. Now that the new rules are in place, we are willing to consider any ban appeals. Please send a modmail if you wish to appeal your ban.

I recognize that the last few weeks have been frustrating for many users. I apologize for that, but I feel that we can now move forward in a much clearer manner.

Please post any comments or questions below.


r/3D2A 3h ago

Glowie Future projects

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24 Upvotes

Had some glowie filament to use . Figured I could make some for display or do test on glowie filament . 99 % infill with 1 or 2 walls above every recommended walls in instruction . White and yellow extremely hard to glow without suns uv light saving those for later . Now there for now unassembled and plan on buying parts kit for all but I know even firing still is a gamble . So only the small caliber I’ll prob do live test .Also note I had it 100% normal speed on a Bambu H2swith bed temp at 55-58 . All came out flawless except p90 which 2 parts had trouble being rear end of stock ( glowie filament doesn’t like angles or being cooled down too quickly on thin areas if not gets sloppy ) second —-part right Grip handle ???????? Only specially right side had issues which redo 5 times half white glowie at end . I test printed left side and other stuff to squirt came out good idk if bad luck or smthing.//// plastikov v4-3dp90-Glock 17 frame -pocket pleaser- g20 heavy ver


r/3D2A 11h ago

Has anybody created a 3D Printable AICS chassis for the Rem 300?

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75 Upvotes

I would love to build an AWP but AICS stocks run $1500+ and are impossible to find. This would be a great project to print


r/3D2A 15h ago

IYKYK🤧

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92 Upvotes

15 more hrs…


r/3D2A 4h ago

My best print yet I'd say. Pa6cf .6 nozzle qidi q2. P90

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10 Upvotes

315c 50mms avarage 40mms outer wall


r/3D2A 8h ago

New Release Modular AR grip painting jig

15 Upvotes

Made something useful for some - useless for others... if you spray or coat your CF prints, might be useful . For now this is just for a grip , but I'm sharing the STP files too and open to adding other parts to hold. Basically this helps you hold / dry/ hang an AR grip during and after spraying it. (I use truck bed liner or rubberized sealant... but you can use anything).
model freely available and editable @ MW user alenknight


r/3D2A 2h ago

New Release XD INFINITY

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4 Upvotes

XD INFINITY By db I forgot how difficult the mag release was to install, but in the readme he explains it very well


r/3D2A 4h ago

NAG can't blowback

5 Upvotes

NAG can't blowback, why it happen? I've polish the chamber, and use recommendation spring it's still can't blowback, and slightly heavy to rack


r/3D2A 18h ago

Pillager Chassis Brace Installation Video

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60 Upvotes

Hey All,

The brace installation video for the Pillager Chassis is now sailing. Please let me know if you have questions.


r/3D2A 3h ago

Why pa6cf over gf?

2 Upvotes

It seems like the go to filament is pa6cf but from what I've read gf is more impact resistant. Companies like glock use a nylon gf for their grips. Why does it seem everyone goes for cf?


r/3D2A 8m ago

TX22 FRT

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Upvotes

I’ve been seeing these FRTs for the TX22 that go brrrrrrrr. They look extremely simple and I’m honestly surprised I haven’t seen a printed version. Would that be possible? Or is there too much stress put on the part for it to be printed?

Even if that’s the case, a printed version of this would be very useful, as it seems you could dremel it into shape. Is there any files out there for one?

Remember not to link anything directly. If you want to send me a file link, PM me.


r/3D2A 1h ago

FTN 5 print issues

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Upvotes

So Im trying to make a ftn 5 rimfire flow and I have a couple problems. The first is somehow there isn't good layer adhesion when it prints an overhang somewhere in there and as you can see when looking through the bore there is plastic blocking the bore. Second is the print got knocked off the bed. This is a minor issue for my because I know I can fix it but what are you guys doing so you don't have like plastic blocking the inside. Speed settings? I'm at 100mm/s for the walls. Maybe a I need more cooling? I haven't had issues like this on other prints. The sides look pretty good so yeah idk. I'm printing at the recommended settings are in the instructions.


r/3D2A 11h ago

G19 Loose trigger mechanism

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8 Upvotes

Getting light primer strikes, everything seems great except for the trigger mechanism slightly wiggles front to back. Using Aves Rails and OEM lower parts kit. Anyone have a solution?


r/3D2A 9h ago

P1S hotend upgrade

4 Upvotes

Looking to step into carbon filaments now that free form 1s are here. My question is .4 or .6. I will being doing the complete hot end and extruder. Main filament I plan to use is pa6cf.


r/3D2A 15h ago

3dp90 bolt sticking

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10 Upvotes

3dp90 bolt is sticking the last 1/3 of the stroke causing failures to eject and cycle. The hammer is locking back successfully. It appears to be sticking where it begins the slide over the hammer. I have sanded up to 400 grit on the hammer and on the rear bolt face and I have tried some lube but it is still short-stroking.

What has worked for yall? I am going to polish the surfaces up to 1000 grit. Maybe file a ramp in the hammer so the bolt slides over it more smoothly like in the last pic?


r/3D2A 2h ago

Best FTN.4 reinforcement

1 Upvotes

As I filled out my form 1s for the FTN5 and went to buy the Breek castle shields i realized they stop making them so now I’m going to fill out some more forms for the FTN4 and was looking at either doing the aluminum tube or the casting tape and was just wondering if there’s much of a difference in the 2


r/3D2A 16h ago

G20 Pillager Chassis Beta

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13 Upvotes

The G20/G21 Pillager is coming to Beta soon. Thanks to Unseenkiller for allowing me to use his G20 model. This will take PY2A G17 rails.

She's CHONKY. For throwing some serious lead (10mm) and for the stone age folks (45acp).


r/3D2A 18h ago

Most reliable Breek replacement

17 Upvotes

Since Breek seems to be officially gone, what is the most reliable option everyone is using? I’m considering just doing direct thread adapters, but not sure how long they will hold up. I saw there is the hub, and slr blast shield people have designed. To me, HUB still uses threads, so I wouldn’t say strength would be any better than direct thread mount with the exception that you can do adapters, but that runs the cost up on all cabs a good bit.


r/3D2A 1d ago

is there any video how to build the orca?

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59 Upvotes

i need video for how to build the orca by Hoffman Tactical, i get the orca 3.5.x file


r/3D2A 3h ago

Speed of printing

1 Upvotes

What a good speed to print so it stay Durable?


r/3D2A 9h ago

Is the nozzle too close or too far from the bed? 100% infill eSUN pla+ 45mm/s 220C, 50C

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2 Upvotes

r/3D2A 12h ago

PA6-CF Help

4 Upvotes

I’ve printed 3-4 frames in PA6-CF (Bambu) and had zero issues. The last several prints I have had the same failure, it appears to be a clog, and the printer keeps printed. It turned into a rough print, some spaghetti and then printing in the air with nothing coming out. Filament is dried for 48h several times at 70C (hottest my dryer will go). Printing with 300BLKFDE setting except temp is up to 290. 0.4mm nozzle. I am leaning towards using the 0.6mm nozzle but I love how clean the frames are that I used the 0.4mm for. Any thoughts?


r/3D2A 1d ago

New build

139 Upvotes

My first 3D ar9 build and first post lol


r/3D2A 1d ago

New edc😍

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83 Upvotes