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

"Works in the CYMA M14 ebr just a little triming is needed other wise amazing hop up!!!!

"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.

"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.

Pros:
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.

Cons:
tight, however, once in the hop up chamber the air seal is amazing.
minor... MINOR break in period.

"I installed this with the included fishbone spacer...all I have to say is WOW. This thing dramatically improves range, accuracy, and fps.
Pros:
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
Cons:
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

"These bucking's plus the fishbone spacers are totally worth it.

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

Cons:
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

"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.

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

Cons:
-None

"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

"These bucking are GrEAT!! Gave me a better accuracy and grips bb really good,but i had to cut it to install because they are quite long and they are Thick so apply some silicon oil and install this baby.
Overall its Great BUY!!

"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.

"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.

"this is a very good hop up bucking unit. i have no idea how it works though when firing. i got my gun and the bucking broke, i sent it to evike and they replaced it with the crappy guarder bucking that ripped after a while. I was tired of the crap so i thought id buy the madbull bucking because madbull has good quality products. whenit came i got excited i put it on my barrel and tried to install it. **************************7 it wouldnt fit in the DBOYS M16 mod 0 hop up unit and i was like TIHS (mirror). i dialed up ol evike and they told me that the 60 degree hop up bucking was a tiny bit too thick for my hop up unit and that i should get the G & P hop up. the G & P looks nice but YAY more shipping costs and waiting.....by the way the RED 60 degree shark bucking is very nice and is very duarble. in my efforts to make it fit (I was unsucksesful) but hey i didnt rip it like that crappy Guarder junk.

"I chronograph with my guarder speeder 2000 and was at 426 fps after installing the black rubber I choreographed in at 478 fps it worked very well I have paid more to get less in the past this is worth it if it works in your gun I have a ca m16 gearbox is all modified and upgraded 5 out of 5

"These bucking do NOT come with the Fishbone Spacers (those H-shaped silicone nubs) anymore, in case you were hoping to get them. I personally didn't see a difference to the normal nubs anyway.

These 60 degree buckings in combination with an Element white H-nub gave me very consistent and pretty accurate results. But even on their own (w/o H-nub), they are IMHO better than SystemA buckings.

Just be aware that this rubber is thick (thicker than G&P, SystemA, or ICS) and therefore need a little bit more force to get into the hop up. Also, they are a tad too long. I simply take a scalpel or sharp knife and reduce the end by 1-2 mm.

Bottom line: I recommend them. They already made a noticable difference in my shooting accuracy, and the price is right! You don't really need the Fishbone Spacer, although they have been (falsely) advertised here.

"Perfect for Open bolt HPA systems that have feeding or consistency problems like f1 jack or smp

"the red are not hard at all. they're just as soft as the blue. other than that they're pretty Ok buckings.