Step 3Upgrading: Part 2
The gun comes with a tiny, almost worthless o-ring. You'll see it once you pop open that orange cylinder. Basically, the gun works by giving the spring potential energy. Then you move the bolt forward and create a large cavity of air in front of it. When you hit the trigger, the spring is released, compressing the air and forcing it out of the cylinder. It ends up going inside the dart, and this compressed air moves the dart at your target.
There are 2 ways to upgrade the seal. The first is the easiest. Get a fat o-ring that fits well. When you do this, you'll want to get one that's smaller than what you'd think would work well. Getting one that's too fat will cause the weapon to malfunction, and you won't be able to move the bolt because the o-ring exerts too much force on the walls of the cylinder.
The second way is to get a couple metal washers and a nylon washer. This is nice because it gives you a seal that's not overkill, and a little stronger than before. Unfortunately, the rest of the gun is still plastic, and in some cases weak.
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that is what i did to my recon and it works fine for my