Maple Leaf Gas Inlet Valve O-Rings (Pack of 5) | FREE Delivery over €50 (ROI)
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Not all gas inlet valves are created equal - some do not have silent-fill O-Rings, causing gas clouds when filling (I'm looking at you, Tokyo Marui). It is, however, an inexpensive and quick fix. Simply add an O-Ring to your inlet valve, and you're good to go.
Installation is simple. Place the O-ring into position, and use the nozzle of a gas bottle to push firmly into position
This improves gas economy, and makes it a more pleasant experience for refilling your mags