Rock Universal Hop up 11mm Nylon/Metal Type:metal Can effectively prevent the BB

Can effectively prevent the BB into the goal

Package includes: 1x si cookie cutter compensator

Multiple size available

it's durable and waterproof to protect your blasters from the elements

10x suction darts

Rock Universal Hop up 11mm Nylon/Metal Type:metal Can effectively prevent the BBUpgrade your gel blaster's shooting performance with the Rock Universal Hop up. Compatible with most gel blasters, it increases shooting distance by 5 meters. Includes 2 flaps and grub screws for easy hop up adjustment. Made with durable nylon metal for reliable use. Features: The Rock general hop up is compatible with most gel blasters which used inner barrel with 11mm outer diameter. Increase the shooting distance for 5 meters. It comes with 2 flaps