Chopping 20" USGI A2 barrel to 11.5" is it possible?

[JasonB1]

13" and from A1 barrels, but using it in a search query might bring up some info that helps.

https://bpullignwolnet.dotster.com/r...liMenusar.html

[Tokarev]

13" and from A1 barrels, but using it in a search query might bring up some info that helps.

https://bpullignwolnet.dotster.com/r...liMenusar.html

Interesting. Thank you.

Of course I'll have the wrong barrel extension once I'm done. Hoping I can polish that out a bit to make use of the feed ramps in the upper.

[Tokarev]

Just going by memory, I had thought that we went shorter than 11.5". I would need to look back into notes to confirm that though. The problem that I see is that the leftover profile isn't really what we want. We aren't at a time right now with affordable and available virgin Colt HBAR barrels or virgin Colt Canada LMG barrels to work with for projects similar to this.

Any historical data is appreciated.

[GH41]

Where do you guys come from? I've got some mushrooms in my lawn and need to mow the grass tomorrow. I don't want to run over any of you.

[Tokarev]

Where do you guys come from? I've got some mushrooms in my lawn and need to mow the grass tomorrow. I don't want to run over any of you.

What?

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[MegademiC]

Haha, that's funny.

Main worry would be shoulder. If it's an hbar, no worries, lightweight barrel may have issues, gas block diameter being another issue.

Edited: new phone autocorrect butchered what I was trying to say.

[pezboy]

Depending on tolerances, there may not be enough material to make the .625" gas block seat. It needs to be on the larger side of the tolerance range to do what the Israelis did with a standard .625" FSB.

[Tokarev]

Depending on tolerances, there may not be enough material to make the .625" gas block seat. It needs to be on the larger side of the tolerance range to do what the Israelis did with a standard .625" FSB.

That is a concern. If that is the case I'll be stuck with doing something like a 9in barrel with pistol gas. Not sure I want to bother if that's the case.

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[tom12.7]

That is one reason that the Colt HBAR and Colt Canada LMG barrels became popular for a time at least. Their heavy base profile allowed options that are not really there for other barrel profiles. Some of those Colt Canada LMG barrels could be made into excellent SPR type rifles for roles with the durability of CHF CL for practical 10x magnification uses on the unknown ranges pretty well back then.
I would have to refer back to some older notes for carbine gas length uses though. I thought that they ended up shorter than 11.5", but a lot of time and many other projects have been done since then.

[JasonB1]

Depending on tolerances, there may not be enough material to make the .625" gas block seat. It needs to be on the larger side of the tolerance range to do what the Israelis did with a standard .625" FSB.

After seeing the Israeli conversion I wondered about the front sight and never have found much other info on them so wondered if a sleeve was involved or other mods.