Mad Bull Thunder Series 60? Airsoft Hop Up Rubber Bucking, Blue, 2pc
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Hop up rubber bucking 60? Blue 2pc Made in Taiwan This Mad Bull Thunder Series 60? rubber hop-up bucking set is designed for regular AEG maintenance. Keep your gun in firing shape and pick up this rubber hop-up bucking set today! How to install: Apply some silicone oil inside and outside the bucking when installing onto the barrel and into hop up chamber.