this post was submitted on 03 Oct 2025
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I'm interested in helping research towards making higher-caliber weapons possible with fully DIY components. I'm still not that well versed in weapon design and I know many people here have more experience with converting components so the main thing I'd like to know is what limitations need to be overcome?

I have an idea for the ECM taper that may work but it's yet to be tested. The other complexity is the bolt carrier group and the locking mechanism but I think that can be made with guides. The other consideration is the gas system, a section could be attached to the gas port without welding with a clamp but then I'm not sure if direct impingement or a piston system is the way to go.

Any help is appreciated.

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[โ€“] Alyosha 2 points 2 months ago (1 children)

I recall that Jeffrod was working on a more precise method of ECM that may be similar to what you're describing. No idea where that ever landed.

There's a question I feel that should be asked more - why aren't chamber reamers used more widely as part of the "DIY barrel" process? Are these reamers unobtainable outside of the US? I recall looking at that a while ago and it did appear they could be shipped worldwide.

[โ€“] sir_obitus 2 points 2 months ago

Seems like a high-risk item to purchase, higher-risk than any other bought component.