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MadBull 60 Degree Shark Bucking With Fishbone Spacer (Color: Black / Clear)

ID: 27088 (BU-MB-SAH)
4.2 stars, based on 41 reviews
MadBull 60 Degree Shark Bucking With Fishbone Spacer (Color: Black / Clear)
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MAP ProtectedExempt From Coupons
The manufacturer of this product enforces a strict minimum advertised price (MAP) policy which excludes this product from any additional discount coupon codes. This item, however, may qualify for free shipping.


  • Three fin design reduces double feeding as well as improves hop up contact
  • Improves compression and in turn a possible FPS increase
  • Fishbone style spacers improve contact over standard spacer design

The Shark Hopup Bucking from Mad Bull was originally designed to prevent double feeding by incorporating 3 fins inside the bucking to aid in securing the BB. The design also improves compression which in turn improves both consistency and in some cases FPS. The 3 fin design paired with the "Fishbone" style spacer also improves the surface area which contacts the BB. This in turn improves both consistency as well as the range of hop up adjustability.

Material: Rubber / Silicone
Package Includes: Two buckings, two Fishbone spacers

Color: Black / Clear

About Madbull

MAD BULL Airsoft, established in 2004, is world famous for it's Airsoft accessories. Our major focus points are: Airsoft guns, Airsoft Toy Launchers, Airsoft Toy B.B. Showers, and Upgrade kits. We have a very strong R&D team and we put a lot of effort in designing new and exciting new products for the airsoft community.

California residents click here for Proposition 65 warning

41 Customer Reviews

(Write a review)

by David H. on 05/05/2018
"This is the only bucking out of about 10 I've tried that worked well for me. I'm using rotary hopups, so don't know about regular hopups. The lip shape is perfect, short and curves inwards, although the bucking is thick and may have trouble squeezing inside. I used a prowin and 2 other plastic prowin clones. Umbrella armory uses this very bucking (blue) for the lvoa (rhopped), which Dutch the hooligan uses. The only thing is it rips pretty easily so you have to be very careful with it. I ripped 2 already trying to flat hop it and taking it out of the chamber.
by Gus S. on 04/19/2018
"Fits very loose around the barrel when I put it on there was an obvious range decrease so that kinda sucks
by ted s. on 09/18/2017
"it is extremely hard to install, near impossible to fit in a krytac hop up , also you can't use the fish bone thing in a krytac hop up so. also it tears easily

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