I went with the Standard 16" with a Magpul HandGuard. The Third of a pound difference is inconsequential to me... the KMR handguard is awesome, but $470 (some kind of sale on the BCM site) after shipping and tax was a steal for everything described above.Can't go wrong there. DId you get a kmr upper? Hard to beat elw kmr uppers imo. All slim and light I'm starting to get movement thinking about it.
I ordered a gunfighter charging handle too. I will post pictures of the finished product when everything is said and done. Black friday ,I will be working on my black rifle.