Tiberus Arms and GuerrillaÂ Air have rebranded themselves to First Stike Paintball and in turn have renamed the Tiberus Armrs T15 to the First Strike T15SF. While the T15 has been renamed it is not just the same old T15. The First Strike T15FS now features mechanical full-auto, much like the MilSig M17 magazine fed guns. There will also be a CQB and DMR version of the T15SF. Look for the T15SF to start hitting the shelves in the next few months.