invictus phoenix hop up til mtwWolverine Airsoft's sister company Invictus Manufacturing has produced a new and really cool CNC cut hop up unit specifically for the Wolverine Airsoft MTW. What makes their new hopup chamber really special is an adjustable threaded piece that allows you to precisely adjust how tight the lips on your hopup rubber should be. By making this adjustable you can avoid most of the problems you can run into when using your favorite combination of hopup