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Old February 3, 2013, 11:05 AM   #11
Senior Member
Join Date: November 2, 2007
Location: Northern Orygun
Posts: 4,923
Set screw and two piece clamshell type leak and dimpling barrels...not a good idea
Pretty much ALL newly installed gas blocks leak, pinned, clamped or screwed. 90%+ seal after a few hundred rounds.

Expand on why dimpling a barrel is "not a good idea"
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