My 5.56 SBR's consist of an older Noveske MK18 and a newer BCM 11.5". I honestly use the BCM more than the Noveske. The 11.5" barrel just feels better to me all the way around. Gas, accuracy, balance, etc. Not to mention the BCM MLOK rail is pretty slick. If you have KAC money to spend, by all means go for it. Lord knows I would!