Interest in a DIY Parts Kit for the 3-pos SCS Super Safety? (fosscad.io)

submitted 1 month ago* (last edited 1 month ago) by gsgmfg@fosscad.io to c/general@forum.guncadindex.com

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Hey friends,

I'm writing to see if there is any interest in a DIY parts kit for the SCS Super Safety.

Kits would be for 3-pos.

The kit would include:

- 2x Grade 5 Titanium Wear plates (.04" + 0.06") - tops machined flat
- 2x 1.5mm 304 Stainless Steel Rods - pre-cut to length
- 1x Rounded Brass Detent Pin

Price-wise I'm thinking $10. What do y'all think?

It's a fun project, I've had mine working very well. This cuts down a lot of the SCS and Amazon shopping logistics.

You'd just need a small mallet and some epoxy, maybe a 1.5mm drill bit if your printer isn't super dialed to clear out the holes.

I'll go by the shop and take a photo of what I'm thinking.

I also have pre-cut mil-spec triggers for sale for $20. But if you're in the DIY camp - I think I'd leave it to you for making your own cutting jig and doing your own trigger.

I could ostensibly include an uncut trigger for another $10. But I'm not sure if that's a value add.

LMK if there is interest. Or if the price point is off, etc. Only worth doing if y'all would appreciate it. What do you guys think?

EDIT: Made an initial batch here:

https://greysummitgear.com/products/gsg-09-diy-scs-ss/

$15 - with a stock mil-spec trigger.

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[-] Alyosha@forum.guncadindex.com 2 points 1 month ago

Out of curiosity, how has this build performed for you? The SCS version I mean - I know the SS design itself works. I don't feel like I ever saw many reports on its actual performance, but I hope it's good!

[-] gsgmfg@fosscad.io 2 points 1 month ago

I have 600 rounds on one cam. Overall the epoxy makes it lighter and stronger. The titanium has no visible wear.

I have a gassy suppressed .300blk build. Managed to melt a PLA+ lever after 450 rounds.

Haven't had the same issue with PA6-CF levers.

I think reducing gas and timing is more important with printed levers than metal.

But once you do that is pretty solid imo.

I have to drive pretty far to test sadly.

[-] Alyosha@forum.guncadindex.com 2 points 1 month ago

Very good to know!

[-] LadPack91@forum.guncadindex.com 2 points 1 month ago

Hey! As the poster of the project, great job putting this together for a reasonable price (some dude before was trying to charge $60 a pack).

I've gotten reports well into the hundreds on these builds, and have not yet had a failure or heard of a failure.

[-] gsgmfg@fosscad.io 1 points 1 month ago* (last edited 1 month ago)

$60 for the raw components is asinine.

Yeah I have 600 rounds through one cam. No issues yet. I melted a PLA lever around 450 rounds suppressed and gassy, started making them from PA6-CF after that.

I'm in discussions with a metal finishing shop to coat the grade 5 titanium to further increase wear resistance. Might increase the price by a few bucks, but should be bulletproof after that.

[-] elgigglez39@fosscad.io 2 points 1 month ago

Is there a guide, pics, or video on how to install it or how it works?

Im a bit confuse

[-] gsgmfg@fosscad.io 1 points 1 month ago

So I don't have a guide for assembly of the parts kit yet.

But I do have an install guide for the Super Safety (full kit) - you would still follow this after printing the cam components and lever, and assembling the cam.

https://greysummitgear.com/guides/install/

[-] sparrow0914@forum.guncadindex.com 2 points 1 month ago

I’d potentially have some interest if it means I don’t have to buy a bunch of extra scs parts lol.

[-] gsgmfg@fosscad.io 2 points 1 month ago

Noted.

I put up a small batch here: https://greysummitgear.com/products/gsg-09-diy-scs-ss/

LMK what you think.

[-] notsuspekt@forum.guncadindex.com 1 points 1 month ago

Quick question, why would you need a cut trigger? Mine function tests with an unmodified milspec trigger and the docs never mentioned any trigger mod. As far as I know that's just a hoffman thing. Same with the rounded off detent. I used a pointy one with the kak 3pos selector and the jig to file it.

[-] gsgmfg@fosscad.io 4 points 1 month ago* (last edited 1 month ago)

You need the 45* cut to allow for switching between safe, frt, and semi.

The "Rounded" cut is a bit up in the air on necessity. If found with an uncut trigger your trigger pull is much heavier.

This is for the SCS Super Safety - not the TURD btw.

[-] notsuspekt@forum.guncadindex.com 1 points 1 month ago

Oh I'm an idiot, I'm so sorry. I saw SCS and assumed turd. This is neat, looks hoffman pattern but a lil different.

[-] sonofabliccy@forum.guncadindex.com 2 points 1 month ago

It’s a reinforced printed super safety

[-] sparrow0914@forum.guncadindex.com 1 points 1 month ago

Question, I see there is a .4 and .63. How would I know which one I need to use?

[-] gsgmfg@fosscad.io 1 points 1 month ago

The plates are .04" and .063" together they get to .13" which is enough to engage the cut-trigger. You'll stack them on each other on the rods.

I'm working on a detailed photo guide. Stay tuned for that!

[-] sparrow0914@forum.guncadindex.com 2 points 1 month ago

Much appreciated!

this post was submitted on 10 Oct 2025

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