Key points: Good price considering the hop up chamber and advanced frame but total performance is limited by the slide set; Expensive if upgrades are considered (require basically a complete upper) to make it as competitive as an upgraded TM that costs as much as the base gun; No as versatile as a TM for advanced builders. Buy if: You enjoy recoil (will be a very heavy slide with red dot on); You don't plan to upgrade (lower isn't TM compatible enough and is good enough/you would be looking at a complete new upper if you want significant performance change); You plan to use it for secondary; Don't buy if: You plan to use it as a base gun for upgrades (TM and KJW are cheaper and better);