poseidon striker kit 113 mmPoseidon Striker Hop Up chamber kit. This Hop Up chamber is made of 100% aluminum which is CNC cut and has been anodized with a blue color. The included split is made of steel and therefore has better durability. The kit here consists of the hop up chamber and is installed with a Poseidon 113 mm inner barrel and a Poseidon 50 degree rubber is also installed. The Hop Up kit is made to fit TM WE G models Note that this can be many different pistols when