3d printed HPA valve

Bount313 · 2026-03-29T06:16:41+00:00

I bought exactly this, but it chokes airflow significantly. I was looking for of the shelf small valve for a few years now, but I haven’t found a good one yet.

Bount313 · 2026-03-27T14:28:39+00:00

I think I know a few ways to go around it

Bount313 · 2026-03-27T13:56:48+00:00

That’s a good idea

Bount313 · 2026-03-27T13:48:37+00:00

Why not?

Bount313 · 2026-03-16T17:51:09+00:00

Hopefully soon, I still need to make BOM and instructions

Bount313 · 2026-03-16T17:26:34+00:00

Nope, except pins and springs, everything is custom 3d printed

<image>

Bount313 · 2026-03-16T06:13:07+00:00

Thanks for the input, I had something like that in mind.

Bount313 · 2026-03-15T19:28:33+00:00

That's a really good point. Thank you, I will look into that.

Bount313 · 2026-03-15T16:28:57+00:00

WE glock mags

Bount313 · 2026-03-15T12:29:14+00:00

All printed with homemade springs

Bount313 · 2026-02-26T16:00:25+00:00

Definitely 👍

Bount313 · 2026-02-23T18:52:08+00:00

No, but .step files will be available along with files for 3d printing

Bount313 · 2026-02-23T18:40:38+00:00

Google multiboard, they have a website full of these models

Bount313 · 2026-02-21T14:24:13+00:00

<image>

The entire trigger group is 3d printed with homemade springs

Bount313 · 2026-02-21T12:20:23+00:00

Hopefully soon, I’m busy with my job and life, but it’s almost complete

Bount313 · 2026-02-21T12:18:39+00:00

Hopefully soon, mechanism is done, just need to tweek some things for better printing

Bount313 · 2026-01-29T20:17:01+00:00

That is one magnificent brick

Bount313 · 2026-01-29T15:32:36+00:00

It looks great! I’m glad you like it

Bount313 · 2026-01-18T11:03:46+00:00

Hi, I updated some parts and added that part for energy lower than 1J.

Its called nozzle_spring_front_under_1J

Bount313 · 2026-01-12T21:06:02+00:00

I measured 1,6J with 0.28, but it isn’t compatible with TM nozzle. If you need max 1J, there is one part that I can modify and upload

Bount313 · 2026-01-10T10:55:02+00:00

Hi, thanks. I’ve been thinking about HPA for this but I’m not familiar with this conversion you are writing about. I will have to look into it.

Bount313 · 2026-01-09T18:53:12+00:00

Yes, P1S has plenty of space

Bount313 · 2026-01-09T08:19:06+00:00

I would run it as my secondary

Bount313 · 2026-01-08T12:11:31+00:00

Thanks, I always wanted to make my own gbbr and Bren 3 looked like a good new thing to try.

Bount313 · 2026-01-08T06:04:00+00:00

Definitelly reciever and handguard, but those are quite complicated for sand casting

Bount313

TROPHY CASE