Any feedbacks/experiences w/LMT's gas piston uppers?

[xfive]

How are they compared to POF, LWRC and PWS system? Any inputs?

[Going4Broke]

Good review on it here.

http://www.defensereview.com/lmt-mrp-pistonop-rod-system-vs-hk416-2000-round-head-to-head-test/

[NetJunkie]

Little over 2K rounds on mine and no issues..I know it's not a ton, but I like it. Ran a Pat Roger's class with it and it was great.