Issue 7: 10/22 Active Reset Trigger, DIY Ammo, 15mm Updates
In this issue we're DIYing optics, printing cartridges and magdumping 10/22s
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In today’s issue:
New Releases:
In this section, we cover new file releases that we find notable. If something catches your interest, go download and start printing!
“Active Reset Trigger” (ART) for 10/22 Released
Opening this issue with a banger, this week an “active reset” system for the 10/22 was released by https://advancedresettech.com.
The critical part is a simple lever that you insert into your 10/22’s fire control group. Once installed, this lever enables the fully semi-automatic fire we all know and love. You can print your own lever using the officially released file!
The release files contain over a dozen lever variants of different engagement surface thickness, so you can tune your gun’s behavior. To further improve reliability and performance, and eliminate bolt bounce, you can purchase a spring and buffer kit from the developers.
The kits come with a handful of professionally manufactured levers, which will have greater longevity than one you print at home. Estimated lifespan for PLA+ levers is 100-200 rounds, 200-1000 for Nylon and 4000+ for stainless steel.
I love that this company is willing to release their files to the world. Consider purchasing their kits to show your support!
Want a printed flat face trigger designed to work with the ART? Check out the ATFART from Decimal Dot.
Recession Ruger R3 Releases
It wouldn’t be a Guncad Digest without an unseenkiller release! Here we have the Recession Ruger R3, the latest in the Recession Ruger line. This release improves CAD accuracy, simplifies the BOM and provides a few different aesthetic options. As can be seen in the render, a full top-cover shroud can be installed on top of the slide to create a much cleaner, PCC-esque look.
Ruger P89, P85 and P95 slides are all supported with this release. If you’re looking for a cheap and reliable PCC, this is a good option!
DIY Collimator Sight Now Available
Yeah, we’re printing optics now. Developer @PovertyConcepts brings us the OEG Scope V7.3, a fully DIY optic that you can install on any picatinny rail.
What’s a collimator sight? As you can kind of see above, the tube is closed, meaning you don’t look through the optic like a normal scope. Instead you keep both eyes open, which (when done right) superimposes the reticule - in this case, a piece of fiber optic filament - over your target.
This release contains two different versions - one in which the fiber optic filament is illuminated through ambient light, and another in which it’s lit up by a Bow Sight Light, so you can use this scope in the dark.
This is a super cool idea - well done!
Editor’s note: right before publication, PovertyConcepts released a pistol optic version of his OEG sight. Check it out here!
She Blinded Me With Stience - Fully DIY “12ga Insert” Handgun
Fresh from developer @HeavyRainBuilds comes the Stience 15 DAO8 E.M.P.A.C.T., a small gun with a long name. What are we looking at here?
Despite calling it a “launcher”, this looks to me like a more traditional handgun, firing small projectiles (think .177 caliber). What makes it special is that the gun is fed by fully DIY “inserts”, a type of DIY ammo similar to BLC’s printable ammo project (mentioned further down).
These inserts have the same outer volume as 12ga shotgun shells, allowing you to use them in a 12ga shotgun as well (crucially, this is not true the other way around!) They are powered by a 209 primer (no powder) which should launch those little projectiles pretty zippy.
Personally I think the Stience design looks cool. The underbarrel part appears to be designed to hold a flashlight, so you can identify your target before you plink him. If you also think it’s cool, give it a print! Documentation can be found on the developer’s Odysee.
AR Hammer Installation Tool - No More Lost Springs
The awesomely-named @ToolOrDie gives us what might be the next must-have tool in guncad - an AR hammer installation tool that holds back the hammer spring legs, making installation a breeze.
There’s a video included in the release showing how it works and as promised it looks tremendously easy to use! This tool can theoretically help with any build utilizing an AR hammer.
Personally my favorite part of a build is launching my hammer across the garage and spending 10 minutes hunting for it. Wait, actually, I hate when that happens. Where has this tool been all my life?
Updates:
In this section we will mention updates to major releases - fixes, new variants, etc.
FossWerks 3D11 STEP Release
The 3D11 from FossWerks is a DIY .22LR 1911 conversion slide, chambered in .22LR, utilizing a barrel liner and some commercial slide parts (CMMG extractor, 1911 firing pin, Glock springs).
It was last updated in 2023! Two years later, FossWerks has released a STEP file for the design. It’s not clear if this is actually an update - the documentation appears almost identical - but in any case, it’s nice to have the CAD for an older project.
Trinity Wesson Updates + Single Shot .22LR
I’ve developed a soft spot in my heart for the Trinity Wesson and enjoy sharing updates for it. The latest updates for this fully DIY .22LR revolver have added an optional 5 shot cylinder, along with options for longer barrels and ejectors.
Developer Here2printeverything is not resting on his laurels, having also found time to design a little .22LR takedown bolt action rifle.
If you like what you see, join the beta over at Black Lotus Coalition!
New Betas:
In this section we round up recently opened betas. Help support development by joining these betas and testing!
BLC Ramping Up Printed Ammo Testing
One of the most common objections in the early days of guncad was “what about ammo”, motivating the 2020 release of a 9mm reactivation guide titled exactly that. Yet following those encouraging first steps, progression on better DIY ammo slowed to a halt.
Since 2023 Black Lotus Coalition has been quietly picking up work on this front, starting with the release of the 9mm Deep printable round. We’ve seen several other calibers being experimented with as well, including revolver ammo and obsolete rifle rounds.
Some might object that these prototype printable rounds are plinkers and won’t do real damage to a target. This ignores a lot of the advances made in this field, and furthermore we must walk before we can run (plus plinking rounds are cool in their own right.)
BLC recently announced that they are stepping up testing and development for this work and they need your help! There’s a very cool project based around this DIY ammo coming out soon, and there’s plenty more work to be done. Visit Black Lotus Coalition to help out.
Projectile Dysfunction - Break-Action 15mm Launcher
The Projectile Dysfunction break-action 15mm launcher from GhostG3D, first announced in Issue 5, has hit beta! If you missed it the first time, this is a remix of the PEN15 which adds a break-action barrel and some cool M79-inspired furniture.
When PrintGunner released the PEN15 he expressed hope that it would lead to more 15mm development in the space. A little over a month later, we can see that his hopes are being fulfilled!
Multi-Stage 15mm Shells Enter Beta
Speaking of 15mm, we’re seeing some impressive development for 15mm projectiles as well. The easiest projectile to make is a banger / fireworks round, which disappointingly only explode once.
thee_Grixxly is changing that with a design for multistage rounds which can be fused together, with custom delays and payloads for each section! Check out the video in the FOSSCAD post to see it in action.
He’s seeking testers, so hit him up on Reddit if you’d like to be involved.
Coming Soon:
This section lists announcements or previews for projects that have not yet hit open beta. Keep an eye out for further news about these projects!
Mac n’ Cheese V3 Announced
Announced at GOALS, MiddletonMade has both a V3 Mac n’ Cheese lower and a commercial Mac n’ Cheese upper - the “M-M11S” in development.
As can be seen in the photo, the V3 lower can take MP5 mags, and he implies that others will be available as well! The beta will go live “soon”, so keep an eye out!
“Baby” 15mm Nameless In Development:
The Projectile Dysfunction (mentioned above) isn’t the only PEN15 remix project in the works. Developer L3thalPredator is working on his own remix (derived in part from the Projectile Dysfunction) that switches from a top-break design to a Nameless-inspired swing-out design.
L3thalPredator mentioned that he was having problems with his Projectile Dysfunction “blowing apart.” This shouldn’t reflect badly on the PD - it’s still in beta and problems are being worked out. In any case, we will now have two alternate designs for someone seeking a cool 15mm launcher.
Fuck You, *Alloys Your CZAR*
The awesomely-named Overclocked_ENIAC is working on a remix of the CZAR which incorporates DB Alloy-style side plates. Interestingly, he notes that the plates in the picture are not carbon fiber, but stainless steel made to look like carbon fiber.
I’m not aware of the CZAR (or other VZ lowers) encountering problems with their buffer tower that would make an Alloy style solution necessary, so perhaps this is more of an aesthetic remix. In any case, it’s quite cool looking and I hope to see it release someday!
News:
In this section we’ll review major news events either originating in the 3D2A space, or particularly pertinent to this space.
P320 Design Files Leaked, Sig Issues Takedown
Some of you may remember when chairmanwon managed to access accurate CAD for the Ruger RXM when it was inadvertently exposed via an online 3D viewer.
Shockingly, SIG managed to expose their P320 CAD in the exact same manner, and once again the Chairman uploaded it to Odysee (link is dead, read on to learn why).
SIG fought back, asking Odysee to remove the file. They employed a variety of intellectual property justifications, calling Chairman’s upload at various times a patent infringement, an exposure of trade secrets and a trademark violation.
It appears the last one stuck, and Odysee removed Chairman’s original upload. The Chairman has in turn reuploaded it with the trademarks removed, and it remains live at time of publication. It’s been roughly 48 hours since Chairman’s republication. We’ll see what SIG’s next move is.
It appears that Odysee worked with the Chairman throughout this saga to try to find a way to preserve the listings. Props to them for fighting the good fight.
Guncad Index 1.1.0 Released - New Tagging Scheme Introduced
Another Digest, another Guncad Index update. Shittinator cranks these out so fast, and this one is particularly exciting to me.
3D2A has long sought a good way to classify various types of printed guns. For several years a three-part definition (Frame / Hybrid / Fully Printed) was used, but in 2025 this scheme is long in the tooth and doesn’t really fit modern guncad. Shittinator and I spent several nights discussing a better way to classify these designs, and these new tags are the result.
Instead of trying to classify a gun into an exclusive bucket, we now use tags to identify various DIYable characteristics. You can see in the screenshot how the FGC-9 MkII has DIY Barrel, DIY Bolt, DIY FCG and No Firearms Parts. Something like the 3DP90 would be tagged with DIY Bolt, but not DIY Barrel or DIY FCG, and a printed Glock will have none of these tags.
These new tags also feed into a uniqueness score that Shittinator has devised, which attempts to rate a design on how unique / interesting it is. This algorithm is still being tuned, but we can see that already it correctly identifies the M1337, PROOF and PIP-9 as some of the most unique designs.
We are working our way towards bringing easy comprehension to guncad. I’m excited and proud to have helped in this mission. Keep an eye out for further updates!
Other Links:
This section will collect any other links I find interesting. These may be older designs I want to share, releases I find notable but don’t have much commentary on, or anything else that catches my eye.
Fresh from @unseenkiller (in collaboration with 3DArms) comes a pack of Mac-11 charging handles, in 12 different styles! Customize your handle to fit your build, and your hand! I actually do think this is a neat release, exactly the kind of accessory that makes up the backbone of guncad.
I love the P90 but hate loading P90 mags, so imagine my joy when I saw this simple printable P90 magloader from SADO. Thank you for saving my thumbs.
@Alcart brings us the Glocktopia megapack, which he describes as “over 60GB of Glock frames and chassis, plus a few extras”, compressed into a 27GB archive. I didn’t download this to check inside, but I’d imagine it contains just about every Glock frame ever released.
Remember the Whistle Pig from Issue 5? Now there’s a 40mm variant for loose change pushers. If you’ve got a 40mm launcher you probably have more interesting things to shoot than whistle rounds, but on the other hand, these rounds are super cheap and won’t start a fire. Use them to impress / annoy your neighbors!
About the Guncad Digest:
Thank you for reading this issue of the Guncad Digest! Please send us your feedback and suggestions for improvements on the issue.
The Guncad Digest is sourced using the very excellent Guncad Index, from /r/fosscad, and from readers like you. If you know of a project you think should be featured, send it our way!
This issue was compiled and authored by Alyosha from 3D Print Freedom / 3D2A. We sell high quality parts kits for some of the best DIY guns available - if you’re looking for your next gun build, come check us out!