The hop-up is the part of your airsoft gun that makes it shoot accurately. It's a metal ring that sits inside the barrel of your gun and moves to control how much air goes into the barrel. A good hop-up can make your gun shoot extremely accurately, but a bad one can ruin your day
In this guide I'm going to show you how to adjust 3d printed matrix cnc machined aluminum rotary hop-up for best performance out of your gun.
how to adjust matrix cnc machined aluminum rotary hop-up