Piston driven AR's


Adjam5

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Who has one?

All AR's, prior to the piston driven ones were made on the gas impingement system. There is a new way to make the upper that is supposed to shoot cleaner and be more reliable than the gas guns. Keeping fouling out of the bolt and blowing gases away from the shooter with a adjustable valve for varying loads/bullet weights.

I think it is just a matter of changing uppers to the piston type. They seem to be all the rage now in AR uppers. Barrett, Sig, S&W, Stag all seem to be making piston driven AR's.

Looking for first hand knowledge of the new system.

Thanks.

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