The safest way of doing this is to strip your gun down and start replacing stuff. Adding high quality items like reservoirs lubricants, seals, valves, etc etc will give you a huge increase in power. If you feel like risking it though you can try (if you have a PCP or CO2 gun) rigging the release valve to only let higher pressure through, or modify the connecting outlet to allow for a bigger tank (that only works if the gun does not have a specific power setting, and instead just opens the valve for a set amount of time).
A stronger spring is the easiest way to increase speed (although a spring that is too strong will destroy the weapon, so be careful). Using a better made or extended barrel may also help, as will using high-quality ammunition. Finally, get closer; pointblank shots are always worse than long range ones.
Before upgrading your airsoft gun you need to take into consideration the durability of the internals of the gun, upgrading one part may cause too much stress on another, so it is best to consult a professional before making any modifications to a gun. Also many times modification of a gun will result in a void warranty, so upgrade with care. As for an answer, it depends on the type of airsoft gun. A spring gun will usually not have any upgrades available for it so there are no ways of making it stronger. Gas guns can get upgraded springs for an increase in velocity, and valves that allow more gas through which also increases velocity. An electric gun, or AEG has by far the most options for upgrading. Depending on the model, there can be no upgrades, or many. Usually lower quality electric guns will not have available upgrades, while most mid to high end models will be able to use similar parts (Usually based off the Tokyo Marui models). The best way to increase the power of an AEG is to get a more powerful spring, that being said, you need to make sure your battery will be able to support the new spring otherwise the rate of fire will fall drasically, or cease firing at all, also the motor, gears, pistons and a few other internals will need to be of high quality to support a new spring, otherwise they can break under the strain. Usually with an upgraded spring you will need to get an increased tourque gear set, and possibly a more powerful motor. It is very difficult to upgrade parts of an AEG without upgrading the rest. The best way to increase rate of fire would be to buy an upgraded battery, a less resistant spring, and a high rate gear set.
Get a better one.
You could also get a better spring (usually that will call for a stronger motor to pull it back correctly), better air seal nozzle, or a tight bore barrel. Some guns also have adjustable FPS, like the G&G FN2000, but the adjustment only has a range of about 30 fps, whereas a new spring can get your fps up to like 500, and a tight bore barrel will increase it by about 10 to 15%.
It all depends on the type of airsoft gun you have. Some people change the spring or the gearbox. Several of the "Sniper" models have upgrade kits available. Do a web search on" Airsoft upgrade guide" or just "airsoft upgrade" and see what is available.
better barrel, stronger spring and other internals.
You get a higher tension spring to increase the FPS and a higher voltage battery to increase the RPM.
You do this by increasing the velocity, ask a gun tech or someone who knows how to adjust your marker to the proper limits. FPS should never exceed 300 fps.
Power upgrade of spring or C02
Keep it clean and get a stronger spring.
NO
No
you dont
Yes. A&K and one other company make an airsoft gun based on the design of the Magpul Masada.
At your house LOL.
I would highly recommend that you do not make your own airsoft pellets. They might jam and or brake your gun.
An Airsoft gun
no. Airsoft guns could not possibly shoot that fast.
Because you, my friend, have a broken airsoft gun.
youtube it
Not worth it. You may damage your gun