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Old February 28, 2011, 08:41 PM   #6
zippy13
Senior Member
 
Join Date: August 23, 2008
Location: SoCal
Posts: 6,442
As an R-1100 owner, I can opine, one specific change was a major upgrade: Using stainless for the 11-87's magazine tube. Many's the 1100 put out of operation because poor maintenance allowed the mag tube to corrode and foul the gas works.
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