- Best spring from the best company!
I APOLOGIZE IN ADVANCE FOR THIS EXTREMELY LONG REVIEW! IT DOES MAKE SENSE AT THE END, HOWEVER!
In my opinion at least, Mad Bull is one of the best airsoft accessory companies in the business today! They make so many high quality items that are in use in many airsoft guns today, that they have become mythical in a sense.
Now, I know some of you may be thinking "Sh0ck this is an M100 only 300 - 320 FPS why would I want that".
Look at it from a different standpoint from yours (most likely someone looking to buy a spring to bring their already high performance AEG into a newer level of awesome): Say you have kind parents, who know that you love airsoft, and decided to buy you a new airsoft gun from a local store (not shortys, which is a big mistake in itself). You receive it, and put on a big fake smile because it could quite possibly be the worst airsoft gun you've ever seen in your lifetime. I'm talking plastic internals AND externals, lower than 220 FPS w/ .2g, huge orange tip, company logos everywhere, and a big fat MADE IN CHINA sticker right in plain sight. What do you do? Of course, you don't want to make your parents sad, so, you go to shortys and see what you can find that you will be able to upgrade it with, internally and externally.
Now, if you have a gun that's SO HORRIBLE that it won't be able to stand up to the force of an M130 or M140 spring, getting this M100 spring will most likely be the ideal choice for you. You can upgrade your AEG's FPS rating to something noteworthy, without putting too much stress on the internals. Now, I definitely don't recommend simply flipping out the springs and leaving it that way, and this is in no way a long term solution. In order for you to have the best performance, you need to upgrade your gearbox, motor, inner barrel, tappet plate, etc, as well as your spring. However, take that painfully horrible shooting AK-47 AEG, jerry-rig some weaver rails to it, buy a better performing battery, replace the buttstock pad, get yourself a fancy Red Dot Sight and foregrip, perhaps even some metal externals, and finally, flip your spring for this beauty for some power behind the flare, and you've got yourself a respectable weapon made from a sporting-good-store-failure.
-Your daily dose of sh0ck
PS: This is all speaking from experience. Everything that you have read from the review is based on past happenings. I still own the aforementioned AK-47 AEG and it is still performing well for me. I also apologize again for the extremely long review for this one product.