Our take: The JG R36 / G36 Hop Up Chamber Unit (complete) for the R36 series of AEG rifles is constructed of durable shatter-resistant ABS polymer for maximum performance, and accuracy. This hop up unit is precision crafted for improved reliability and durability. The hop up unit comes with all necessary components for easy installation.
Note: Professional installation is recommended.
Package includes: Hop up unit, bucking, hop up nub, and hop up bucking lock clip