Contact Us (626) 286-0360 Walk-In Superstore Daily Deal
New Phone Support Hours M-F 8am-5pm PST
Browse by Type or Category
GET YOUR SPRING ON! - 25% OFF (exclusions apply, see details)   Use code: SPRING

Mad Bull 60 Degree Shark Hopup Bucking x2 + Fishbone Spacer x2.

24 Customer Reviews

by Jameson M. on 01/19/2016
"Best bucking I've used to date. Ive used the king arms, Systems, Matrix, and G&P, and Angel Custom buckings and it out performs them all. Very good material and contrary to belief I've never had any problems installing it. It performs well whether in cold or hot weather. And if you add an Angel Custom tight bore you can cause some serious damage with any build!! Very pleased.
by David R. on 08/16/2015
"I was having consistency issues with my Wolverine SMP. And I heard from AMPED that people with my problem have tried this and it usually fixed it. Anyways, I got it and it works well. I tried flat hopping one and effed it up. Good thing there's TWO! I am now using a prowin, red bucking, fishbone nub, and 407 prommy tbb. Shooting 350fps w/ .20s, 225ft!
(You're welcome SMP users)
by linza w. on 08/16/2015
"Shawn W., review of the MadBull Red Bucking:

Definitely the best bucking I've ever used.
They're great for fathop modding, R-Hops, ect.
It can be a tight-ish fit in some chambers, but that doesn't bother me.
Best airseal and FPS consistency out of any bucking I've ever used.
I've used: Prometheus purple, Lonex, G&G green, SHS, Maple Leaf, KWA 2GX, and many-many other buckings. Out of them all, the MadBull red gets the best FPS consistency, and least FPS +/- variation.
In my custom builds, I primarily use the MadBull red bucking.

+Best FPS consistency.
+Least FPS +/- varation.
+No double shots.
+Seems to be the perfect softness vs hardness for both high FPS and low FPS setups, love it!
+Material is top quality.
+Fishbone X-Spacer actually is a little more stable than a standard nub.

-They should maybe make a pre-flathopped version. Without the "mound" on the inside. For quicker install of flathop, R-Hop, and MARS-Hop systems.
by Matt B. on 05/25/2014
"Tripled my GR16 CQW Rush's range and accuracy, fanatastic upgrade part for anyone looking for more range.
by Mark Benedict S. on 04/03/2014
"Best hop-up rubber ever! Excellent for High-torque set ups! Boosts FPS and accuracy!
Buy it!
by Robert B. on 03/18/2014
"The bucking was amazing and spacer had to be glued the hopup arm so it would not fall out. Beside that it was a easy instillation and makes a world of difference in your accuracy. over all a 5 out of 5.
by Taylor P. on 02/16/2014
"Works in the CYMA M14 ebr just a little triming is needed other wise amazing hop up!!!!
by Dakota P. on 02/12/2014
"Got this to improve my UAR. It worked. The spacer was a little too fat to fit into my hop up, but nothing an exacto knife couldn't fix. Now my UAR shoots like a dream and the bucking gives awesome air seal. Highly recommend for anyone looking to improve their hop up. but beware you may have to trim the spacer to get it to fit, but modifications are what make working on your gun fun.
by John T. on 06/07/2013
"First off let me just warn everyone that these bucking are an extremely tight fit (at least into standard G&P hop up Units). However after the initial squeeze and the first hundred rounds or so, this bucking will blow you away.

The day I installed this bucking into my G&P M4 Sentry I also managed to break my MadBul 6.01 363mm tight bore barrel. As a back up I threw in my old CA 363mm (6.05) stock barrel off an old Sportline instead. I took out my Angel Custom H hop bucking and put in the provided fishbone as well. Again, it was a very tight fit, and it was nearly impossible for me to get the bucking seated perfectly inside the hop up chamber, so I threw it all together and went out to shoot, hopping that it would settle itself and it did. After about a mid cap's worth of BB's shooting straight up (despite hop up being off), it settled in and the accuracy and range increase from the bucking alone easily out did the benefits i saw from the Madbul 6.01 barrel. Make sure to lube it up well (the outside or it!!) with some silicon oil so it slides in better.

Increased my grouping by and inch or two better than my madbul barrel grouped
Increased range
Better/aligned air nozzle to BB contact
Helps prevent jams
solid AF.

tight, however, once in the hop up chamber the air seal is amazing.
minor... MINOR break in period.
by mckee c. on 02/01/2013
"I installed this with the included fishbone spacer...all I have to say is WOW. This thing dramatically improves range, accuracy, and fps.
Durable, hence it being 60 degree
A true upgrade, actually improves performance
Includes 2 buckings and 2 spacers for only $11
Helps prevent against double feeding issues
Amazing with a madbull 6.03
You need to lube it generously
May need cutting down (mine didn't)
Might need a break-in period so that it gives enough hop
Might put you over field limits in terms of FPS
by shane l. on 01/21/2013
"These bucking's plus the fishbone spacers are totally worth it.

Easy installation if done right
increased FPS (my .25 go straight up in the air now)

Will have to cut some of the bucking off at the end in order to fit barrel lock on(don't force it like me, ended up having to take a zip tie to my now broken barrel lock)

P.S. you may have to get heavier bb's due to the major FPS increase
by George S. on 07/25/2012
"This is a great bucking for any airsoft gun. My gun shoots 438 fps at 28rps and this bucking keeps a consistent grouping at 100 plus feet. I would reccomend this bucking with a 6.03 tbb for a quick fps, range and accuracy boost.

-Strong bucking that dosn't rip easily
-Increases accuracy, fps, and range

by Brad G. on 04/10/2012
"these are great hop up buckings, i use these in my A&K SR-25 and in my JG M4. they made my SR-25 deadly accurate and boosted the FPS of my M4 almost 50 FPS! for 12 bucks its a steal for 2 buckings and 2 fishbone spacers. do not hesitate to buy them if your looking for an accuracy and FPS boost for cheap
by David N. on 09/26/2010
"These are the best buckings sold period! They improve shot grouping, distnance and fps and are much more adjustable than any stock or other buckings. The air nozzle seal in very good as well. I use these buckings in all of my guns and my team mates guns.
by karen m. on 11/29/2008
"these are good hop up buckings. i put one wiht a systema hop up and the other wiht a G&G hop up. both fit fine. idk by how much but they do make your groupings a little better. over all i would buy these over any other buckings.