Scotty is right. The system is pretty cool, however all it does is add extra weight and complexity to an already simple design. KISS = keep it simple stupid.
My carbine weights in around 10 pounds, if I put a piston upper on it, it would probably come in around 12 pounds. Doesn't sound like much, but when you pick up a 9-10lbs rifle, then a 12-14lbs rifle you will feel the difference. My deer rifle weights 9lbs 6oz unloaded. Loaded it is close to 10lbs. You carry that rifle all day long, and it feels like it weights 30lbs!
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The last living thing on earth will be me. I'll step on the last cockroach.
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