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Senior Member
So outside the fact that there are some pretty good deals out there on barrels I'd like to ask about the feasibility of chopping a GI A2 barrel to a carbine.
Anyone done it? How'd it turn out? What's your gas port spec?
Thanks. Happy Fourth!
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“The rifle itself has no moral stature, since it has no will of its own. Naturally, it may be used by evil men for evil purposes, but there are more good men than evil, and while the latter cannot be persuaded to the path of righteousness by propaganda, they can certainly be corrected by good men with rifles."
Member
Cut crown, weld the old gas port and redrill another. Sure it can be done but probably at the cost around a new 11.5 barrel
I'd just buy new
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Senior Member
Should be no need to weld up the old port. I can cut the barrel just behind the old port and still have plenty to work with.Originally Posted by boombotz401
Yes. I know it is easier to buy new. But I have access to a lathe and want to give this a try.
“The rifle itself has no moral stature, since it has no will of its own. Naturally, it may be used by evil men for evil purposes, but there are more good men than evil, and while the latter cannot be persuaded to the path of righteousness by propaganda, they can certainly be corrected by good men with rifles."
Senior Member
The proper gas port size for a 20" rifle gas is .093", enjoy running that on a 11.5". No thanks.
Member
Rifle length gas port is 12" down
Carbine is 7"
Yes you would need to redrill a proper gas port in the correct size
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Senior Member
The barrel will be cut behind the original gas port.
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“The rifle itself has no moral stature, since it has no will of its own. Naturally, it may be used by evil men for evil purposes, but there are more good men than evil, and while the latter cannot be persuaded to the path of righteousness by propaganda, they can certainly be corrected by good men with rifles."
Senior Member
Forgot about that, I guess the only issue is how good the smith is at crowning a barrel. Thats what I would worry about.
Member
Wow it's been a long day...missed that one
Gas port around .063 is sufficient in a 11.5
Forget what it cost me to go from 16 to 13.7
Call around some shops I'd suggest for a price
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Senior Member
Going to try and tackle this myself. Was hoping someone might have some pointers WRT the diameter of the barrel at the new gas block seat. Also I assume there will be enough meat in the barrel at the 11.5in area to turn a shoulder for a flash hider to butt up against.
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“The rifle itself has no moral stature, since it has no will of its own. Naturally, it may be used by evil men for evil purposes, but there are more good men than evil, and while the latter cannot be persuaded to the path of righteousness by propaganda, they can certainly be corrected by good men with rifles."
Senior Member
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.
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