Upgrade your AEG's fps to 410 to 440fps. It is highly recommended to upgrade plastic bushings and spring guide to metal bushings and spring guide with this product. Also, it would be wise to upgrade plastic pistons to polycarbonate piston; plastic piston heads to duracon piston heads; and standard gears to reinforced steel gears. Finally, just to be safe, upgrade the standard gearbox shell to a reinforced gearbox shell. Finally for best results a battery upgrade is also recommended.
2013-08-05 18:39:03 B. MEADORS verified buyer
For: Madbull M130 AEG Spring
I LOVE THIS SPRING! Madbull knows what they are doing! I would highly recommend this spring to anybody!
This is just a really good spring! Nuf said!
Came with about 365fps instead of about 400 but you would be surprised how far 365fps will shoot!
2013-02-09 14:01:50 C. BRENNER verified buyer
For: Madbull M130 AEG Spring
When I bought this I was putting a high-power setup M16,the spring broke the front my stock (I donít remember what brand actually) gearbox shell off, but thatís normal because I had a pretty bad stock shell and wasnít running a sorbo pad or anything. so I ordered a CA shell. however I found out the hard way that now the spring wolent work, the reason being is that i have completely upgraded internals, but, when the motor pulls back he spring it compresses to the point of the rungs actually touching each other, thus not allowing the gun to fire. after I did a little digging and herd of other people having this problem with other springs as well and the solution was to chop off a minimum of 2-3 rungs to allow proper compression, the problem is that I donít have the proper tools to do this and it is no easy task i tried some wire cutters and a vise at first, it DENTED the blade on them. then I tried the vice and these super chopper things that I donít remember my reason for buying but they are basically a really fat pair of scissors, the spring caused the two blades to separate apart. And lastly I tried a dermal, this only caused some of the coating to come off and a large scorch mark on the tool and a little one on the spring. Great though if u have the means to cut this monster. ( i am rating 5 stars because the spring is great but i just cant use it)
great for snipers
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