MadBull 60 Degree Shark Bucking With Fishbone Spacer (Color: Red / Design: Hard)

"Amazing bucking for Polarstar Jack. It fixed issues I was having with feeding and accuracy. The teeth in the bucking held stabilize the bbs right before it gets launched down the barrel. I am using a Prometheus eg 6.03 tightbore and Madbull Ultimate Hopup. Only issue I ran into was the the length of the bucking. The bucking was interfering with the barrel clip, so I had to trim the end of the bucking. However, this is very simple to do and does not affect the performance. If you run a Polarstar Jack or any other open bolt system, I would 100% recommend this bucking. (Bought the 60 degree red).

"Works well in my matrix metal AK hop up. Had to do a little cutting to make a compete seal but nothing major.

"Works great for my Echo-1 P90! No issues so far.
(I have Prometheus 6.03 EG Tight Bore Inner Barrel for Airsoft AEG (Length: 247mm) and Angel Custom Advanced THOR Complete Hopup Chamber for P90 Series Airsoft AEG Rifles)

"MadBull Blue 60 degree bucking, a standard replacement for your worn out OEM bucking.
Nub was larger diameter then my stock nub, still fits in the hop up just fine, this may actually improve hop up with the slightly larger contact patch the larger diameter provides.

"perfeito, qualidade surpreendente. Eu recomendo

"Awesome bucking and nub. I have them in both my G&G CM 16 RAIDER SHORT and G&G FIREHAWK, increased accuracy and range significantly. And this is with stock 6.04mm inner barrels! This coupled with a G&G M120 spring to bring the FPS to 350-355FPS with .25 gram bb's...... Killer!

"I have used several hop up bucking over the years, and I always find myself going back to the Madbull red shark bucking time and time again. They are a bit thicker than normal bucking, but I fine this helps prevent then frome tearing as easily.

"Improved my L96s range and accuracy substantially.

"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.

"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)

"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.

Pros:
+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.

Cons:
-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.

"great bucking. installed on my Cybergun F.A.M.A.S. DMR and it improved fps by a lot, (which is needed when you shoot .36g BB's), and the accuracy is like 3x better than stock. would also be because of the JBU 6.03 590mm TBB

"Tripled my GR16 CQW Rush's range and accuracy, fanatastic upgrade part for anyone looking for more range.

"Best hop-up rubber ever! Excellent for High-torque set ups! Boosts FPS and accuracy!
10/10
Buy it!

"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.