As if 11.5″ uppers weren’t already lightweight enough, BCM has taken things to a whole new level. They recently announced that their 11.5″ lightweight uppers are going into production and should be available for purchase in “early Fall”. These uppers will feature a lightweight profile 11.5″ barrel with carbine gas system. They will be extremely lightweight, especially with some of the lighter weight handguard options like Troy/VTAC Extreme or Magpul MOE handguards.
If you are SBR shopping, these upper should find its way near the top of your list.