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Old September 13, 2012, 07:05 PM   #22
RampantAndroid
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Join Date: May 6, 2011
Posts: 226
The PTRs have a heavier barrel - main reason. The SAR3/8s and HK91s use a lighter barrel. But I opted to buy a ACOG for my AR15 instead, maybe buy a 30 cal suppressor too.
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