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AR15.COM
3/5/2005 5:08:40 PM EDT
What would the proper diameter for the port on an 11.5 inch barrel be? Russ told me today and I forgot.
3/5/2005 5:14:58 PM EDT
[#1]
Go about 2/3rds down the page.
3/5/2005 5:26:44 PM EDT
[#2]
Thanks Guy!

Yup, mine was .070 and now its .090
I sure hope it works!