We keep making the Recon Bag smaller and it keeps working. The Recon Micro is 4×6 and uses a very unique fill that is super-fine and very heavy. It reacts much like heavy sand without the downsides of using sand. The dense, heavy fill conforms to an obstacle and the grippy surface of the bag locks it in. The carbon fiber base is available in Arca or Picatinny and brings you the ultimate in compact stability without the need to put straps over your rifle. This is not a balance bag and is designed to allow you the stability to drive your rifle and control recoil.