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Posted: 2/13/2006 9:35:37 PM EDT
[Last Edit: 2/13/2006 9:36:26 PM EDT by JE3146]
Was given a 20" bbl today with a muzzle brake on it. The previous owner was trying to remove the muzzle break with dremel foo and a file, and kinda fubared it up.

He enlisted in the Army, and didn't want to deal with it, so he gave it to me. I know a guy I with a lathe, so I can cut it to 18" and rethread/recrown to get past the butchering

But what about the gas port?

What size would be best for an 18" bbl?
Link Posted: 2/13/2006 9:41:24 PM EDT
Mine required opening up about .010" to keep the same ejection pattern.

It probably would have run on the same port, I've heard of guys with that experience, but I liked having it run right.
Link Posted: 2/15/2006 8:09:59 PM EDT
Open it up to 0.108 of an inch.
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