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Old December 25, 2010, 06:54 PM   #22
Senior Member
Join Date: November 26, 2008
Posts: 145
It's really up to you. I own more piston ARs than I do DI. My go to though is a KAC SR15. It's just lighter so at day long carbine courses it makes it somewhat easier.

There really isn't a right answer. Both will serve you well. For those that say it's more parts do the math.

Op rod
Maybe a spring


Gas tube
Gas ring
Gas ring
Gas ring

I would bet that the gas rings or tube will go bad before a op rod, piston or plug.
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