I have both a s&w ar 15 with the r-5 melonite barrel also the dpms with chrome barrel. put 50 rounds apiece. took home started cleaning them. not sure but notice that cleaning the dpms was a lot more work than the s&w, in that it took longer to clean. had to really push the cleaning rodthrough the barrel but the melonite seem to took maybe 1/3 the effort. am I right or wrong. also I checked s&w site to see which had the melonite barrels not a one of the ar have it now just the ar 10 is that bad or good for me. does that mean the chrome barrls are better. should I keep it or sell and get the chrome barrel.