Adjam5 Posted January 18, 2010 Report Share Posted January 18, 2010 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. Quote Link to comment Share on other sites More sharing options...
toddyboman Posted January 20, 2010 Report Share Posted January 20, 2010 william and Ken just got a new ones....maybe they can help you out... I hope one day to add one to my collection but haven't yet. Quote Link to comment Share on other sites More sharing options...
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