KWA E-10 Hop-Up Bucking
The KWA E-10 hop-up bucking fits most KWA gas pistols and some SMGs. A fresh bucking restores accuracy and helps prevent jams.
What the E-10 Hop-Up Bucking fits
Match the diagram number in your model’s exploded diagram to be sure you order the right part.
| Model | Diagram no. | All parts |
|---|---|---|
| ATP / ATP Auto | 34 | — |
| KMP9 | 88 | KMP9 parts |
| kz.75 | 29 | kz.75 parts |
| M11A1 NS2 | 38 | M11A1 NS2 parts |
| M1911 MK Series and M1911A1 | 87 | M1911 MK parts |
| M226 | 37 | M226 parts |
| M9 PTP | 33 | M9 PTP parts |
| M93R II | 39 | M93R II parts |
| TT-33 | 83 | TT-33 parts |
What the E-10 Hop-Up Bucking does
What it does
The hop-up bucking is the rubber sleeve at the back of the inner barrel. It seals around each BB and puts backspin on it, so the BB flies flatter and farther.
When to replace it
- Accuracy has dropped or BBs curve off line
- BBs jam or double-feed at the chamber
- The rubber is torn, worn or hardened
Some models use a ball bearing with this bucking. The I-1 ball bearing is sold separately.
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 E-10 (SKU 199-9999-E010-NS2).
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.
E-10 Hop-Up Bucking specs
| KWA part code | E-10 |
|---|---|
| SKU | 199-9999-E010-NS2 |
| Sold | Individually |
E-10 Hop-Up Bucking FAQ
Which KWA models does the E-10 Hop-Up Bucking fit?
The ATP / ATP Auto, KMP9, kz.75, M11A1 NS2, M1911 MK Series and M1911A1, M226, M9 PTP, M93R II and TT-33.
What is the E-10 Hop-Up Bucking diagram number?
It depends on the model: ATP / ATP Auto part 34; KMP9 part 88; kz.75 part 29; M11A1 NS2 part 38; M1911 MK Series and M1911A1 part 87; M226 part 37; M9 PTP part 33; M93R II part 39; TT-33 part 83. 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.
