KWA Universal Charging Valve O-ring
This KWA o-ring seats around the metal filling nozzle of the charging valve and fits all KWA gas magazines. It is sold individually.
What the Charging Valve O-ring fits
This o-ring fits all KWA gas magazines, including the magazines for these models.
| Model | All parts |
|---|---|
| ATP / ATP Auto | — |
| LM4 series gas rifles | LM4 PTR parts |
| KMP9 | KMP9 parts |
| kz.61 Skorpion | kz.61 Skorpion parts |
| kz.75 | kz.75 parts |
| M11A1 NS2 | M11A1 NS2 parts |
| M1911 MK Series and M1911A1 | M1911 MK parts |
| M226 | M226 parts |
| M9 PTP | M9 PTP parts |
| M93R II | M93R II parts |
| TT-33 | TT-33 parts |
What the Charging Valve O-ring does
What it does
This small o-ring seats around the metal filling nozzle of the charging valve and seals it while you fill the magazine.
When to replace it
- Gas leaks around the fill valve while filling
- The o-ring is missing, cracked or flattened
Before each fill, check that the small o-ring in the center of the fill valve is there.
Often replaced together
Small parts wear together. Order them in one go and save a second wait.
Order the right part the first time
- Open Manuals & diagrams and find your model’s exploded diagram.
- Find the part on the diagram and note its number.
- Check the number against the table above, then add the part to your cart. Order by KWA part code U635 (SKU 199-9999-U635).
Work on an unloaded gun with the magazine out and no gas in it. If you are not sure about taking your gun apart, ask KWA support before you start.
Charging Valve O-ring specs
| KWA part code | U635 |
|---|---|
| SKU | 199-9999-U635 |
| Fits | All KWA gas magazines |
| Seats on | Charging valve filling nozzle |
| Sold | Individually |
Charging Valve O-ring FAQ
Which KWA models does the Charging Valve O-ring fit?
All KWA gas magazines.
Is it sold individually?
Yes. Each order quantity is one part.
Do I earn KWA Rewards points on parts?
Yes. KWA Rewards members earn 1 point for every $1 on orders of $50 or more, and 50 points = $1 in store credit. Parts, magazines and gas all count toward the order total. See KWA Rewards.
