May 2, 2012, 12:31 PM
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#9
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Senior Member
Join Date: March 15, 2005
Location: Central Connecticut
Posts: 3,166
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Here's a thread with many photos of used ROA cylinders and conversion cylinders and some don't have any noticeable turn rings.
http://www.thehighroad.org/showthread.php?t=538088
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