Piston driven AR15s

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Perplexed

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If you were at the range and someone there had a pair of AR’s - one DI, one piston - that were otherwise identical, and they offered to let you shoot them back to back without looking at the method of BCG operation. Could you tell the difference between the two in terms of shooting them?
 

HiredHand

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I doubt you could tell a difference just shooting them side by side.

FWIW, if I wanted a “modern” piston operated AR-style carbine, I’d probably look at a BRN-180. I think having the ability to fold the stock for storage would be more useful without adding a $200 doodad.
 

TheDoubleD

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When I worked in Afghanistan our company issued us gas piston LWRC AR15's.

As long a we fired civilian issue FMJ they worked just fine. If we fire GI/NATO issue greentip, the third shot always failed to extract in some guns. Not all just some. My gun for example

These guns did not have a gas regulator on them.

I understand LWRC makes a regulator standard on the guns now. Make sure you have this feature on any gas piston you use.
 

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