I own 6 RRA uppers (and a couple of lowers). I'm not going to debate their relative quality against the Noveske's, BCM's, or Colt's. They will do what I ask them when I ask them, of that I am certain. I properly staked the carrier key with a MOACKS, I properly staked the castle nut, and I ensured they had the proper extractor insert and spring. For the three which are carbine length gas systems, I am using a M16 carrier with H buffer. I used the Explanation of Features to make each of the adjustments I just mentioned, as they are reliability enhancements. The chart is meaningless to me. I will never shoot out the 4140 chrome lined barrels. If a bolt breaks, I have some BCM bolts as spares. I have shot a number of 5.56 loads through each of them without issue, so chamber dimensions are not an issue. No, my RRA's don't meet all the specs on the chart, but then, my needs don't require it. I have no doubt they will function reliably in any situation they may be needed, to include a firefight. While I have never been to a carbine class, yet, I have pumped about the same amount of rounds downrange in relatively the same amount of time as most would do during a class. That particular RRA ran fine and is running just fine (and hasn't been cleaned in the last 3000 rounds). Each of the others have the same reliability enhancements. Again, I'm not here to tell anyone that my RRA's are "just as good as". They do what I need them to do when I need them to do it. That is a fact! Of course, so does my Noveske.
Just one of the Shepherd's sheepdogs. Joshua 24:15
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