r/GunnitRust • u/GunnitRust • Sep 29 '25

Summer Rust 2025 Summer Rust 2025 Complete Year 2025 Winter Rust 2026 SignUps

12 Upvotes

Table of Contents

This is the CONTEST RESULTS post for SUMMER Rust 2025 with Winter Rust 2026 Signups. Gunnit Rust is a gun themed building contest. For more information, the rules and tiers are below plus links to our past contests. Winter Rust 2026 will be the weekend of March 27, 2026.

  • Current Rules
  • Participation Tiers
  • Hall of Heroes
  • Summer Rust 2025 Hall of Heroes
  • Winter Rust 2025 Hall of Heroes
  • Winter Rust 2025 Signups

CURRENT RULES

I like to keep the rules and tiers minimal for maximum creativity. Last changed June 2019

  • No Kabooms!
  • No breaking the law!
  • Post in /r/GunnitRust on the contest dates.
  • You no longer have to title your post “GunnitRust” as we have the sub. Title it “Summer Rust 2023: Title Here” if you want it to be easily searchable. example: your post is called "Polymer 80 .22tcm9R" so you use the title "Summer Rust:Polymer 80 .22tcm9R".
  • Pneumatic guns allowed because of restrictive regions.
  • .25acp energy is the bottom goal but not super-enforced.
  • The r/GunnitRust Sub ONLY allows contest posts on contest days. It is available to post ideas, questions, other builds you’ve seen, etc at all other times. Please Subscribe & Participate
  • You can submit anything you have not submitted to the contest before no matter when it was done.

PARTICIPATION TIERS

These have not changed but some of the writing has been improved and more details added. Please let me assign your tiers and don’t call them out because I frequently move them into the category I see fit. Also note that the total winner can be in any tier so don’t panic. Each tier has a winner and each series has an overall victor.

  • Tier I Built Gun(or Suppressor) Basically, you build a gun from non-gun components. We have allowed commercial gun springs and barrels(or Barrel Liners) for safety but if you have the skills, doing your own is mad props. The rules are pretty arbitrary and you can convert pellet guns, toys, or flare guns etc. Note that I have included suppressors in this tier assuming you form your own baffles.
  • Tier II complete built receivers, uppers, 80% receivers, and suppressor builds with factory baffles with commercial parts This is where all the 80% receivers, re-welds, and parts kits on built or substantially modified receivers would go. Again a winner by Karma and I encourage people to favor the guys doing more work. Note the change for built upper. By built upper I mean you made an upper from sheet metal plates and an MP5 forend or something. It is substantially more than Tier III so I added built upper receiver and obviously your M11/9 or AR-15 can be the base receiver now. Note that if you buy an oil/fuel filter kit and convert it to a suppressor I put it here because you did not form the baffles.
  • Tier III Assembled Gun More commercial parts are allowed . Parts kits turn into guns here. You'll note that this is where the AR-15 assemblies went. Obviously the 10/22 that won the category for Summer Rust 2015 had the advantage of not being just another AR. Many of these are very good and many of them are plain jane. The key is participation so bring anything you assemble to the table. Assembling a gun is much more effort than the majority of our browsers give and makes you an essential part of the contest. Don’t forget that parts list!
  • Tier IV Trusty Rusty Tier Best resurrection of a dead, neglected gat. If your region frowns upon gun building maybe you can play too by turning a rusty hunk of broken down garbage into something functional and ready to be loved again.
  • Tier V Modified Guns Fat kid just want to play too? Did you glue a rail to your 1911? Bless your heart. We actually had a .460 Rowland Glock conversion do very well in Summer Rust 2015 Personally I'd like to see some handmade wood furniture dress ups. These are always interesting no matter how simple you think your work was.
  • Tier VI Gun Related I want the projects to be of some quality...So by related I mean A range of things like your workshop, your home range, your handmade range bag, display cases, custom safes, car mounted gun vaults, your reloading bench setup, bench rest, brass tumbler, or something else actually worthy of a post. So the upper V are guns and this one is gun accessories. Some of these have been really cool things you wouldn’t normally think of like an automated powder alarm on a progressive press.

HALL OF HEROES

Summer Rust 2025

Leaderboard

Tier I

Tier II

Tier III

Tier IV

Tier V

Tier VI

Winter Rust 2025

Tier I

Tier II

Tier III

Tier IV

Tier V

Tier VI

WINTER RUST SIGNUP

18 comments

r/GunnitRust • u/GunnitRust • Mar 29 '26

winter Rust 2026 Winter Rust 2026

4 Upvotes

Introduction

The sub is open to contest posts and contest posts only. All other business in this post, please.

Past contest and more complete rules in other stickies post here

CURRENT RULES

I like to keep the rules and tiers minimal for maximum creativity. Last changed June 2019

  • No Kabooms!
  • No breaking the law!
  • Post in /r/GunnitRust on the contest dates.
  • You no longer have to title your post “GunnitRust” as we have the sub. Title it “Summer Rust 2023: Title Here” if you want it to be easily searchable. example: your post is called "Polymer 80 .22tcm9R" so you use the title "Winter Rust 2024:Polymer 80 .22tcm9R".
  • Pneumatic guns allowed because of restrictive regions.
  • .25acp energy is the bottom goal but not super-enforced.
  • The r/GunnitRust Sub ONLY allows contest posts on contest days. It is available to post ideas, questions, other builds you’ve seen, etc at all other times. Please Subscribe & Participate
  • You can submit anything you have not submitted to the contest before no matter when it was done.

Leaderboard

Tier I

Tier II

Tier III

  • /u/ xxx []()

Tier IV

  • /u/ xxx []()

Tier V

Tier VI

  • /u/ xxx []()
13 comments

r/GunnitRust • u/geobladez • 10h ago

Shit Post New project

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39 Upvotes
3 comments

r/GunnitRust • u/IrishPiglet • 19h ago

Help Desk 80% raw aluminum finishing help

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30 Upvotes

I just finishing milling this raw aluminum lower and now I’m looking at options for finishing. The main Reason is the safety/ trigger pins, detent/ etc repetitive rotations and such. Just want to make sure it’s hard and won’t wear out prematurely. Any ideas before I hit it with a coat of clear and call it a day?

Thanks!

11 comments

r/GunnitRust • u/cumstain694200 • 1d ago

Show AND Tell mp5 slap on my ar15

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21 Upvotes

my side charging ar that I managed to make able be charged via slap

6 comments

r/GunnitRust • u/Glad-Strawberry-3497 • 9h ago

Help Desk Excuse if the wrong subeditor, but What is a budget 3d Printer to sprint G43/G43. I was lookibg at Enders but haven't gotta a legitimate response besides assholes replying.

0 Upvotes
4 comments

r/GunnitRust • u/geobladez • 4d ago

Show AND Tell 60 Ramset rounds ready to go.

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116 Upvotes

Otherwise known as sambung rounds

6 comments

r/GunnitRust • u/geobladez • 4d ago

Show AND Tell Riptide .22

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66 Upvotes
5 comments

r/GunnitRust • u/IfSechsWereNeun • 4d ago

Glen mkI

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26 Upvotes

Two steel tubes, a 3d printer, and some steel dowel pins in standardized imperial measurements. Took me around 4 months to polish. PPSH sear and trigger combo. 10.5" Barrel, 9mm bolt & barrel/trunnion combo, 21.5oz bolt, chopped up Glock magwell + sleeve, and a cursed PPSH sear

0 comments

r/GunnitRust • u/Outrageous-Till8252 • 5d ago

PSA- Not all red dot mounts are parallel to the rails. 1 degree off is 60MOA!

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5 Upvotes

Needed to mill a 1911 slide for a red dot. Since it was a new footprint for me, the CAD for which is often wrong online, and it needed to be at a 0.8-1 degree down angle. I figured I'd share my process. This is a DPP footprint on a 1911 slide done at 1 degree so it doesn't require a shim. CAD, CAM, workholding, setup, and milling.

2 comments

r/GunnitRust • u/geobladez • 6d ago

Shit Post Ramset .22

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20 Upvotes
8 comments

r/GunnitRust • u/geobladez • 7d ago

Riptide .22 suppressed

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82 Upvotes
8 comments

r/GunnitRust • u/geobladez • 7d ago

Show AND Tell Riptide .22 prototypes

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41 Upvotes
4 comments

r/GunnitRust • u/Antique__throwaway • 6d ago

Help Desk Printed shotgun recievers and making them feed extremely long flare rounds. How do you increase the bolt travel on a Fossberg 500?

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3 Upvotes
1 comment

r/GunnitRust • u/ZealousidealAcadia69 • 7d ago

1.5" launcher question

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16 Upvotes

I've had this idea for a little bit. This is basically a 12ga slamfire pipe shotgun that then feeds into a 1.5" pipe. I plan to shoot it using light hand loaded 12ga blanks loaded with tripple seven black powder substitute. Is there a way to get a rough calculation for the pressures I can expect? Id like a decent safety margin. And are there any other safety concerns with this general setup? I have heard muzzle loader guys talk about barrel obstructions such as a bullet that is not fully seated over the powder causing problems, but this is also functioning like a ww1 / ww2 riffle grenade, so I'm not quite sure which train of thought to follow there.

5 comments

r/GunnitRust • u/Antique__throwaway • 6d ago

Could printing let you reuse SMG bolts and keep a fixed firing pin+simple trigger?

0 Upvotes

tldr: the trigger group could be further back than the bolt moves without a new semi-only end on the bolt that slots into the trigger like a key in a lock, and the whole receiver could be print-in-place so it cannot have parts taken out of it to allow FA.

Could there be some printed receiver and trigger group that limits the bolt travel? That way, you can design a new printed add-on to the back of the bolt which latches onto the sear through some mechanism that could prevent full-auto conversion.

That way, all the metalworking for blocking bars and the like can just be replaced by printing instead. And then there's no way the bolt could be used in FA unless you completely redesign the barrel or trigger group.

You could use a print-in-place trigger group and receiver that you can't even disassemble to prevent parts from being taken out. If it breaks just print a new one.

13 comments

r/GunnitRust • u/Antique__throwaway • 8d ago

Help Desk If open bolt/FA was legal, how much cheaper would parts kits builds be?

7 Upvotes

Could you get a PPS-43 or FMK-3 for under $250? Reweld an LMG for $1000? How much would change? How much does a post-sample build cost right now and how simple is it?

5 comments

r/GunnitRust • u/Antique__throwaway • 8d ago

Help Desk DIYing revolver, bolt action, and break open recievers/breech faces

1 Upvotes

They're more involved in containing pressure so it seems more difficult. Is anyone working on this? Lots of parts kits could be opened up if we find out a way.

0 comments

r/GunnitRust • u/geobladez • 10d ago

Show AND Tell Riptide .22 full brass with handle

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123 Upvotes

The integrated handle can also be used to store a ram rod and extra round parts can be interchangeable.

24 comments

r/GunnitRust • u/geobladez • 11d ago

Show AND Tell Riptide .22

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145 Upvotes
15 comments

r/GunnitRust • u/Not-giving-it • 11d ago

Help Desk Sks ak mag conversion

7 Upvotes

Recently acquired a thoroughly bubba’d sks. I plan on taking it off the deep end. Want to convert it to take ak mags. Was curious from people’s experience here how difficult and finnicky the conversion is, and if they think it’s worthwhile.

I have a buddy with access to a mill but he’s quite backlogged right now, if I end up taking it to a shop, what’s a fair price for such work?

1 comment

r/GunnitRust • u/geobladez • 12d ago

Riptide .22

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202 Upvotes
44 comments

r/GunnitRust • u/Lazy-Welcome-4738 • 12d ago

Watch me fire my crappy firecracker gun

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4 Upvotes

Sadly I have no tape in my house

0 comments

r/GunnitRust • u/Outrageous-Till8252 • 12d ago

Next up on AK builds- Flat bending and rail welding!

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8 Upvotes

This is the next episode in my AK series and goes integrally with the riveting video I posted last week.

I'll try and post the other type of 80% finishing, a pre-bend, within the next couple of weeks which, with these other two, rounds out all the information on receiver finishing.

0 comments

r/GunnitRust • u/Fun_truckk • 12d ago

Vmac upper on MPA defender lower?

2 Upvotes

I have a couple vmac uppers for various builds but I see MPA defenders on sale and I don’t have a conventional mag-in-grip lower yet. Thing is the defenders on sale are top chargers and I want to run an optic. Can I put a side charger vmac uppers on an MPA lower?

0 comments