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[ARCHIVED THREAD] - Quick Gas Block Question

Posted: 11/13/2008 9:44:08 PM EDT

What diameter gas block do I need for my 16" colt M4 barrel

I am out of town on business so I don't have my rifle with me or else I would just measure it myself.

Posted: 11/13/2008 9:55:43 PM EDT

[#1]

.750"

[ARCHIVED THREAD] - Quick Gas Block Question

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