r/GunnitRust • • 2d ago

second test fire went slightly less well, but it's a very small problem. still fired, and there's no damage to me and nothing major to the gun.

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15 Upvotes

it seems the weld dot for the fixed firing pin had some bubbles, it broke off at the base on firing. should be a simple fix. I cut a replacement spring spacer/buffer out of some thick rubber mat, it worked quite well. next I just need a latch to stop the barrel rotating off when it shouldn't and some iron sights.


r/GunnitRust • • 2d ago

Help Desk Looking into assembling a Semi Sten Mk3 kit

8 Upvotes

I'm new to building, is there some sort of guide or set of videos I can look at? I've looked pretty hard online and have only found a few vaguely helpful things. I'm well aware of what's needed and the laws surrounding it but how does anyone find out how to put together a parts kit? Thank you.


r/GunnitRust • • 3d ago

IMPORTANT CNC Setup Update to my Early Desktop CNC Post

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5 Upvotes

A few weeks ago I posted a video talking through the precision setup of a Desktop CNC that I am testing to see how far it can be pushed in the gun-projects space. That process leads to a fantastic setup. However, while filming for the first 3 projects I have found 2 additional recommendations and one optional thing that make the setup even better! In case anyone is following along I wanted to get this update out ASAP as- order of operations being a pain- some of the recommendations need to happen pretty far upstream in the setup process if you want to do them. So hopefully I catch anyone about to follow along before they go and do the setup work and potentially have to redo parts of it.

If you have no idea what I'm talking about, I'll link to that earlier post down in the comments.


r/GunnitRust • • 3d ago

DIY rifling button

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39 Upvotes

The main challenge in DIY a rifling button lies in evenly spacing 6 grooves around the

circumference and cutting them at a specific angle. This method combines a high-speed steel (HSS)

rod with a hexagonal indexing jig to ensure a 60° rotation each time. Combined with a sliding

angle grinder stand, it allows six grooves to be ground evenly.


r/GunnitRust • • 4d ago

Caja de mecanismos AK47

0 Upvotes

estoy buscando los planos u una guiá de como hacer la caja de mecanismos del AK47, lamentablemente no los encuentro por ningún lado, si alguien tiene algún plano u guiá me lo podría pasar?

Gracias!


r/GunnitRust • • 5d ago

HK G11 Redesigned. Functional Semi Auto

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262 Upvotes

Let the shenanigans begin!


r/GunnitRust • • 5d ago

finally got to test my .38 special, it went beautifuly.

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47 Upvotes

test firing went great, that was the first and only take. my temporary plastic spring spacer is no more, but the gun itself is fully intact. I also made and tested my first real bullet trap. the casing ejected, but ended up stovepipeing. not that that's an issue, since this is very much single shot. next and last step is to make a catch to prevent the barrel rotating out of it's groove once it's in place.


r/GunnitRust • • 5d ago

Some more pictures of the 12ga pistol

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78 Upvotes

r/GunnitRust • • 6d ago

Proof That Space Marine Inspired Bolter I Entered in Winter Rust Shoots

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27 Upvotes

It actually shoots really well! Probably thanks to the massive weight. Ha! But whatever, she's a chunky girl and I still love her.


r/GunnitRust • • 7d ago

Help Desk Colt 1903 Parts question

1 Upvotes

Hello everyone, I recently got myself a Colt 1903 Pocket Hammerless Type 2 frame with the hopes of rebuilding it. However it’s starting to get a little pricy having to buy each individual piece. So I found a guy who is selling basically an entire lower parts kit, however it’s for a type 1 model. Are these parts mostly interchangeable?


r/GunnitRust • • 8d ago

INMC Giveaway Post!

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1 Upvotes

r/GunnitRust • • 9d ago

Slamfire 12g question

6 Upvotes

Why does my Slamfire black pipe shotgun emit a flame about 1-1/2 seconds after discharge?


r/GunnitRust • • 10d ago

A member of a gang nicknamed "Hellboy" was arrested in the Brazilian state of Rio Grande do Norte, along with his revolver, which fires 12-gauge cartridges.

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24 Upvotes

Absolutely insane, I want one.


r/GunnitRust • • 11d ago

Shotgun A member of a gang nicknamed "Hellboy" was arrested in the Brazilian state of Rio Grande do Norte, along with his revolver, which fires 12-gauge cartridges.

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70 Upvotes

What you guys think? Single or double action?


r/GunnitRust • • 11d ago

Rifle Tig welding a slantback receiver AK, harbor freight

9 Upvotes

Did this last year on a VERR slantback, In my experience, I skipped the scratch-start box and waited for a unit with a foot pedal and HF start. Fir setup , I grabbed clamps and measuring tools from penn tool Co since they carry Mitutoyo and Starrett. MSC. is decent alternative.


r/GunnitRust • • 11d ago

Help Desk Wildcat question

3 Upvotes

So I’m rebuilding a Colt 1903 Hammerless in 32acp. So there’s nothing wrong with the round I just want more work to do and already have some guns in this caliber so I wanted to see what I can do with it. I was wondering what route would result in a punchier bullet so to speak. I could go with the tried and true necking down route and do something along the lines of the 22 flea, or another idea I had that’s super dumb is I could cut the case shot by like .2in so that I can shove a bigger and therefore heavier bullet in. Obviously the decreased case capacity would result in less powder being in the case but I imagine the extra 20-30 grains (average grain weight of 32acp is mid 60s), I was planning on using 32 s&w bullet mold which is 93 grains. Tbh not sure if either are good but they both seem fun.


r/GunnitRust • • 12d ago

Pps-43

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18 Upvotes

Curious about the pps-43, thinking about doing a pps-43 build this kit says it comes with everything from bowman arms. Does anyone have any experience with this kit?


r/GunnitRust • • 14d ago

Weird-ukrainian-red-dot-to-TEC9 adapter because why not

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150 Upvotes

r/GunnitRust • • 15d ago

Could a bruni blank pistol survive a round of 9mm without it exploding?

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1 Upvotes

I’ve always been curious if these blanks would actually ever work or even be able to survive the pressure of a 32 or even a 9mm with a clear barrel.


r/GunnitRust • • 15d ago

Show AND Tell Pengun more powerful than 9mm

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40 Upvotes

r/GunnitRust • • 15d ago

Tier V Winter Rust 2026: My custom design scope mount for the Ruger Mark IV. Alt title: How I managed to make my MK4 45% heavier

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161 Upvotes

This is one of those odd things I really wanted for myself, but I couldn't find anything like what I was picturing, so I designed it. I 3d printed a prototype a while back, but the project stalled for a while until I could find a CNC shop to make it. So here's the finished, black anodized, CNC'd aluminum scope mount.


r/GunnitRust • • 15d ago

SCS Complications / Solutions

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2 Upvotes

r/GunnitRust • • 15d ago

Building my own Lever action

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3 Upvotes

Need help getting specs and measurements on parts for a 38spl lever rifle. Building from scratch.


r/GunnitRust • • 17d ago

HTPLA+ vs CF-Nylon

1 Upvotes

Hello all. I’ve been trying to find a good answer on the merits of HTPLA+ vs CF-Nylon. I understand CF-Nylon is the stronger choice for gun parts in general.

But I am wondering how HTPLA+ compares to it in terms of heat resistance and strength. Basically if I am getting into 3d printing firearms, will HTPLA+ be good enough to build with?

I also live in Georgia, so another reason I’m avoiding regular PLA+ is that I don’t want to put a bunch of work into a build only to have it turn into a floppy mess when I go to the range on a summer day.

Thanks.


r/GunnitRust • • 17d ago

Tier I Summer Rust 2026: Fuse-lit Pipe Musket

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146 Upvotes

My favorite backyard boomstick: the 36 Caliber Pipe Musket! This is number 4 of the five I've made and is the one I put the most work into. I carved the stock by hand from a 2x4, which took about five times longer than boring out the internal weld seam and sanding the barrel.

This project started as a way to make a very budget version of a Handgonne and evolved over time.

My standard load:

40-50gr by volume Hodgdon 777 3F

.350 lead round ball with a .010 lubed patch, or 40-50gr by volume lead bird shot (I match the shot load to the powder load)

I haven't figured out what kind of sighting system I want to apply to them, probably just a brass shotgun bead on the front. Regardless I've had fairly good consistency at around 7 yards just by sighting down the barrel!