high muzzle velocities of cheap AEG

Did you ever wonder why cheap AEGs from China (Cyma, Both Elephant, Jin Gong, Galaxy) have higher muzzle velocities than AEGs from Japan or Taiwan (Tokyo Marui, Classic Army, G&G, G&P)?

For example, new Cyma's AK47 has muzzle velocity of 410-430 fps (the one I own has 290 fps) and costs at WGC Shop $138 while Tokyo Marui's AK47 has only around 270 fps and costs $287 (price for AEG with battery and charger, to be comparable with Cyma's replica). You can easily see that the TM is twice as expensive as the chinese Cyma.

Many people in Poland buy those replicas because they think they'll get good replica cheap. They think that the more fps the better replica. Well... they are wrong...

What does the high muzzle velocity mean? Nothing except that the BB leaves the barrel with high velocity. It doesn't imply the replica has high range. It doesn't mean it has good accurasy, either!

What determines the range and accuracy? Inner barrel and hop-up. If the inner barrel is precise and made well, all the BBs will be fired in exactly the same direction. What happens after they're shot depends on the quality of the hop-up, especially the hop-up bucking (rubber). If the hop-up rotates each BB the same way, they all have the same trajectory. The better hop-up action, the longer range and the steadier trajectory.

One of my favorite replicas is the MP5K PDW that has less than 260 fps but is really accurate, despite it's short barrel.

So why the chinese replicas are made to have so much fps? Because this is the only thing that is easily comparable between replicas. You can measure the muzzle velocity easily, but you can't measure and compare the range and accuracy of different replicas! And it's easier to put stronger power spring than to make entire mechanism more precise and airtight.

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