» Hop-up

Compatible with all Marui compatible M4 series Airsoft AEG. The Ultimate Hopup Unit designed by Madbull

Parts and Materials:
Metal body, includes a famous MadBull blue bucking (60 degree)
Tracer unit is optional.

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Shark Hopup Bucking was originally designed for 470 to prevent double feeding.
By having 3 special "fins" inside the bucking, Shark Hopup Bucking can hold one and only one B.B. tightly in the chamber.
In the mean time, to our surprise, we found that this bucking could enhance the velocity on some AEGs.
But not all AEGs will have the same results and the result could be different from one AEG to another.
Unfortunately, we don't know the exact reason because each AEG has its own characteristics.
However, we do believe that the friction (from 3 fins) applied onto B.B. will enhance the velocity.

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This is only good for distirbutors who need a lot of buckings for repairing AEGs. NOTE: You have to buy at least 10 pcs of retail packs of the buckings (SAH) with this order. (Please note: Only 50 pcs rubber buckings and 50 pcs spacers included. No silicon buckings.) Learn More

The Madbull Sniper Accelerator Hopup Bucking is designed with a soft rubber and silicon material to allow for maximum adjustment and increase overall performance of your sniper rifle. The bucking is specially designed to seal compressed air and prevent double b.b. feeding. Each package comes with two bucking that work with the Echo 1 M 28 & VSR-10 style rifles. The Madbull sniper hopup bucking will take your rifle to another level of precision!

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60 degree rubber is softer than normal 80-90 degree rubber.
Much easier to install and operate than the softer rubber bucking.
The B.B. will shoot out easier and without headaches and need less skills to upgrade
Cons: This item may last shorter than the regular rubber. 

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