Quick Change barrel ar15

[Left Coast Avenger1]

TNW based in Vernonia, OR makes a quick change barrel upper with a gas piston system on it. Has anyone had any experience with it? I am eyeballing it right now, but I have heard neither good or bad about them.

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[arjunki]

Looks like a cool concept but what's the cost? With a gas system that would make no sense because just changing the whole upper is simple & isn't overly expensive. But with that system you retain the costly piston system (I'm assuming) and just change out the barrels. Like I said, cool concept!