StainTrain Posted November 15, 2015 Report Share Posted November 15, 2015 (edited) I am looking to build a 6.5CM upper specifically for competitions. Tell me about your builds regarding accuracy and reliability. I will be running it on a Tactical Machining Lower and DPMS upper. Edited November 17, 2015 by StainTrain Quote Link to comment Share on other sites More sharing options...
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