Prometheus Bridge type Hop Up Tensioner w/ Soft & Hard for Marui AEG (Except UZI)

Prometheus Bridge type Hop Up Tensioner w/ Soft & Hard for Marui AEG (Except UZI) A very innovative Hop-Up rubber buffer knub Designed for low stress and high performance Enhance BB flight in long and straight line, with 3 contact points to stabilize the BB Super hop up effect Suitable For Tokyo Marui AEG Airsoft Guns (Except UZI) Include 2 Piece (Hard & Soft)