I have a RLL that I’ve run about 3000 round with the same paddle and no damage. I believe that if you take the time to set it up properly it will last longer and be more reliable. I like to set my timing with the thinnest paddle that will still perform 100% of the time.
My dpms is completely reliable no problems with the 16” or 11.5” barrels. I would recommend sending M60 joe your lower and upper and carrier to set up for the RLL and KNS re-enforcer. That way when you get your link everything will be ready to run. Don’t forget possible bolt bounce if running a collapsible c.a.r. stock; I run an h2 buffer my stock DPMS buffer would not run.
Check this out, it’s how I perform the timing and it works: very informative.
http://www.quarterbore.com/nfa/lightninglink.html