The explanation can be found with how the inner barrel, hop-up, magazine and the air nozzle of the piston are built.

“OLD-SCHOOL GEARBOX” AEGs (G&G ARMAMENT & LANCER TACTICAL)

For this the regular old-school gearbox AEGs require a freedom of movement from the inner barrel and hop-up in order to insert and fit a magazine, but the more freedom a barrel has, the more the air from the air nozzle hits the BB on another spot and the less consistent the hop-up will create the hop-up effect. This translates itself in less effective range and less precision with each shot.

“TWEAKED GEARBOX” AEGs (TOKYO MARUI NGRS)

Tokyo Marui has solved these issues by building and inner barrel system that provides less freedom and a longer air nozzle to make the air hit the BB in a more precise way with each shot and that’s why we see both a better effective range and a better grouping.

SYSTEMA PTW AEGs

As for why the Systema PTW outperformed all of the rest, has to do with it being designed for the purpose of being very precise.

BUT HOW DID THEY DO THAT?

Well, the hop-up, barrel and entire piston lock shut inside the upper receiver to minimize any possible movements and also the fact that the Systema doesn’t provide any sort of recoil only helps in it being more precise.

DAS GBLS AEGs

As for the DAS GBLS you can compare its whole system as a hybrid between a Systema PTW and a GBBR or Gas BlowBack Rifle. So it also locks shut like a Systema does, only thing is that its heavy recoil widens your grouping like seen from our data.

WHAT ABOUT UPGRADED LOW/MID-BUDGET AEGs?

You could say what about an upgraded low-budget or mid-range AEG, how will that perform? Well, the fact is you can put all your money into it to make it perform better, which it will, but it will never perform equally as good or better than the other systems. This is because their built is inherently different compared to the higher range AEGs and as long as you have that freedom of your inner barrel and hop-up, you will never shoot any better with these airsoft guns.

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