The Glock - a pistol made famous for it's boring reliability, utilitarian looks, and notable appearances in popular culture. It is a popular build for tinkerers and sportsmen alike.

Here's the living story of how 3D printing continues the story of this platform: 🧵
The earliest known printed Glock frame dates back to at least 2017 - there's rumors about ones existing before that point, but in 2017 we saw the first test fire of a printed Glock frame by a reddit user named 'mattxl'. It was a 22lr build, but began the process.
Around this time, a developer we all know and love (FMDA1776) would print his first Glock frame - a 9x19 - but he wouldn't share videos or pictures as it was just a personal project. Few pictures exist, but it was the originator of the DIY rail systems we know today.
It was in January of 2019 that a reddit used named IOScribe shared the first publicly posted video of a 9x19mm printed Glock frame firing - the 'Banana Standard'.

After seeing this video, FMDA and I got connected and began to work on our own frame.
We didn't like that IOScribe's frame used Polymer80 rails - while IOScribe said they were printing their P80 rails in metal, we still wanted a solution that wasn't so expensive.

This culminated in the FMDA G17 - the first 9x19mm Glock frame released to the public.
This project took about two months to come together - FMDA and I tag-teamed designing and testing respectively. We revised the rail spec multiple times, starting with a milled front rail and plastic rear rail before moving to a solution that had screwed-in metal rear rails.
We found that PLA was strong enough to hold up as a material to print these frames in - a promising sign, as the easiest/most common material to print in would work for this project. After thousands of rounds of testing, the frame was released.
We went with a rail spec that would be feasible for people to do themselves - a front rail block with as few critical dimensions as possible, and rear rails slats that could be made with a dremel tool.
The rear rails would prove to be the weakest part of this frame design - but that was a sacrifice that was made in order to make the rails more DIY-friendly. Overtightening or undertightening the screws would cause cracks, and aligning the rails could be tricky.
Additionally, while the frames would work for over a thousand rounds if assembled perfectly, lots of things on the frame needed hand-fitting or special attention - the mag catch spring, slide latch spring, magazine catch, and a few other places on the frames would need fitting.
A developer by the name of d33pthought made passes at resolving the hand fitting on these frames - getting them much closer to being a 'drop-in' experience. This revision would mark the extent of progress on the 'DIY Rail' frames until late 2020.
However, after the release of the original FMDA G17, two major things happened: First, FMDA1776 went balls-deep on Glock frames, making models that worked with P80 rails, then spitting out G19, G26, and G43 frames in addition to the completed G17 frame.
Second, rail vendors started popping up - these vendors sold the rails needed to complete these frames at affordable prices. Once rail vendors started selling, people started printing Glock frames - lots of Glock frames. Several thousand rails sets have been sold since 2018.
This surge in interest, presence of rail vendors, plus the all-too-common "my frame cracked at the rear rails" posts on help forums made it clear that a revised rail setup was necessary - something stronger, easier to install, and more reliable.
In late 2019, I completed the first draft of what this revision would be. A u-shaped rear rail, pinned in around the trigger housing, much like some aftermarket Glock frames have done before. I did a quick hack job of the frame CAD, and came out with a prototype.
This new design would offer several benefits - its increased strength allowed for the use of 40SW uppers/slides, and simplicitiy made installing rear rails a simple drop-in operation.
I ended up testing this frame with hundred of rounds of 9x19mm and nearly 2000 rounds of 40SW - without a single issues or malfunction. This testing would take until late 2020 to complete, but it was made clear that this was the route to follow.
Around this same time (late 2020), another developer joined the printed Glock frame world - they are known as PY2A, and offer stamped front and rear rails of their own specification. Their frames still exhibited some of the little hand-fitting quirks like the FMDA frames did.
After testing and development, I redid the FMDA G17 frame to take this new rail spec, and went through the tedious process of virtually eliminating the need for hand fitting when assembling the frame - assuming the user prints their frame properly, the parts fit in easily.
Following the release of the DD17.2, the DD19.2 was released - adding the G19 to the updated frame spec, along with the benefit of virtually no hand-fitting required.
The DD26.2 frame is still in progress - it will need a new front rail designed, while the same rear rail is shared between the DD17.2 and DD19.2.

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More from @Ivan_Is_Back

9 Feb
The AR-15. A hugely popular rifle with as much hype, lore, and confusion in it's history than any other firearm in popular culture.

One of the first (and like the most common) 3D printed firearm to date, the AR-15 has seen amazing innovation in the 3D printed firearm world: 🧵
The story of the printed AR15 lower dates back a long time - before 2013, before the Liberator, before Defense Distributed even. A user by the name of 'HaveBlue' is accredited with having fired the first printed lower. They've got a cool blog:
From my understanding, HaveBlue had success using 22lr uppers with their printed lowers, but 223/5.56 uppers tended to break the rear buffer tower - something that plagued these early days of 3D printed AR15 lowers.

Soon, reinforced options started popping up.
Read 15 tweets
3 Feb
The Browning Hi-Power stands as one of the most popular service handguns in history.

It lost popularity due to its weight - having a steel frame made it a hefty sidearm.

What does 3D printing bring to the table when it comes to this beautiful machine? Find out below! 🧵
The very first prototype featured printed rails - I just wanted to see if the design was even possible to print and assemble. After a lot of hand fitting, I got a working prototype, which I fired by hand. It didn't cycle because the slide was far too tight on the plastic rails.
I fired a few more shots by hand, and to little surprise, the skinny edge of the rail that holds in the sear broke off. I had proven viability of the design to myself though, and committed to the project in December of 2019.
Read 22 tweets
15 Jul 20
The fact that Breonna Taylor's murderers are still free, the judge who signed the warrant is still sitting, and the sheriff who authorized the raid is still has a job as the only sign you need to know this whole system is a circus. A mockery of justice. Thread, I guess.
If you, as a prviate citizen, discharged a firearm (even in self defense, as the cops in the raid claimed) and struck an innocent bystander, you'd be arrested on the scene, have a bail set above 250k, and be convicted in a hurry - even if you didn't kill the innocent individual.
Meanwhile, you have cops break into the wrong house, rightfully get shot at for being home invaders, then they fucking magdump the joint because they have less firearms training than kids who play Call of Duty - and the guy who was defending the house was the one arrested??
Read 14 tweets
3 Jun 20
If you're a person in harm's way and need access to hard power (for protection of self or property), regardless of who your aggressor is - the state, the feds, violent instigators who couldn't give a damn less about George Floyd - here's the thread for you: how to make an AR15.
In the US legal fiction, only the lower receiver - one part - of the AR15 is considered a firearm.

If you make this part, you will have created an AR15 - all the rest of the parts can be ordered as spare or repair parts perfectly legally.
Now - there's a couple ways you can go about getting or making your lower receiver. If you live in a place without waiting periods for firearms, great - you can just order one:…
Or a whole AR15, if you can find them in stock.
Read 19 tweets
6 Apr 20
ButWhatAbout: Ammo had it's first test today.

Nothing extreme discovered, just a basic proof of concept.

Some people lack the resources or ingenuity to come up with conventional ammo, this project seeks to address this issue.
Today I fired four of the proof-of-concept rounds - first one didn't read, second was 320FPS, then 370, and 380.

Projectile weight was 35gr, which in hindsight was WAY underweight for the 1.3gr of powder each round had - upping projectile weight is the next plan.
I'll leave you all to your imagination as to the propellant and primer setup for now - the method employed is currently unregulated in much of the world, and I intend to finish by studies on BWA:Ammo before giving the world a chance to regulate it.
Read 6 tweets
28 Mar 20
What is done cannot be undone.

The FGC-9 - the world's cheapest, easiest to build semi-automatic 9x19mm firearm is released to the public domain.

3D-Print the means of your own liberation.
Thanks to all those who helped beta test the ECM barrel tutorial, the Menendez Mags, the FGC-9 itself, including its build tutorial - and of course, to JStark, the mastermind behind the FGC-9's development.

Your work has been forever set in stone.
Read 4 tweets

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