Everyone that has the 6.8 pleased with it? Have one more lower I am building up and wondering what to do with it. I have an 18", 16", 10.5" in 5.56 and a DPMS 308. Not sure if I need a 6.8 or will gain that much with it. Was thinking to just slap a BCM middy in 556 and be done. Any opinions? Wanna kill these ads? We can help!