Choosing the right size and thickness of the seal can be a challenge, as a small seal won't seal properly, and one that's too thick won't fit.

EPeS makes your life easier again by preparing various variants of high-quality sealing o-ring sets for specific parts you need to reseal in AEG, GBB, and HPA.

For installation, it's necessary to remove the original seal, then lubricate the new one with silicone oil/vaseline and install it in place instead of the original seal.

Now the air (or gas) will stay where it's supposed to!