KWA F-12 Cylinder Return Spring
The KWA F-12 cylinder return spring fits most KWA gas blowback pistols and SMGs, including the M9, M93R II, M226, M1911 and kz.75. It is sold individually.

What the F-12 Cylinder Return Spring fits
Match the diagram number in your model’s exploded diagram to be sure you order the right part.
| Model | Diagram no. | All parts |
|---|---|---|
| kz.75 | 76 | kz.75 parts |
| M1911 MK Series and M1911A1 | 72 | M1911 MK parts |
| M226 | 84 | M226 parts |
| M9 PTP | 85 | M9 PTP parts |
| M93R II | 107 | M93R II parts |
| TT-33 | 73 | TT-33 parts |
What the F-12 Cylinder Return Spring does
What it does
The cylinder return spring pushes the cylinder (KWA’s name for the air nozzle) back into place after each shot, so the next BB loads and the gun is ready to fire again.
When to replace it
- The gun cycles sluggishly or the nozzle does not fully return
- BBs misfeed or double-feed
- The spring is kinked, broken or shorter than a new one
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 F-12 (SKU 199-9999-F012).
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.
F-12 Cylinder Return Spring specs
| KWA part code | F-12 |
|---|---|
| SKU | 199-9999-F012 |
| Sold | Individually |
F-12 Cylinder Return Spring FAQ
Which KWA models does the F-12 Cylinder Return Spring fit?
The kz.75, M1911 MK Series and M1911A1, M226, M9 PTP, M93R II and TT-33.
What is the F-12 Cylinder Return Spring diagram number?
It depends on the model: kz.75 part 76; M1911 MK Series and M1911A1 part 72; M226 part 84; M9 PTP part 85; M93R II part 107; TT-33 part 73. Find your model’s exploded diagram in Manuals & diagrams.
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.



