KWA K120 and K400 Magazine BB Stop
This polymer BB stop keeps BBs retained in KWA K120 mid-cap and K400 high-cap magazines. It is part 2 on both diagrams and does not fit the K120c cutoff magazine.
What the K120/K400 BB Stop fits
Match the diagram number in your model’s exploded diagram to be sure you order the right part.
| Model | Diagram no. | All parts |
|---|---|---|
| K120 mid-cap magazine | 2 | K120 mid-cap magazine parts |
| K400 high-cap magazine | 2 | K400 high-cap magazine parts |
What the K120/K400 BB Stop does
What it does
The BB stop, or keeper, is the small polymer piece that keeps the BBs retained in the magazine.
When to replace it
- BBs spill out of the magazine
- The stop is cracked or missing
Does not fit the K120c “cutoff” magazine. Only the standard K120 mid-cap and the K400 high-cap.
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 MG002 (SKU 199-1002-MG002).
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.
K120/K400 BB Stop specs
| KWA part code | MG002 |
|---|---|
| SKU | 199-1002-MG002 |
| Material | Polymer |
| Does not fit | K120c cutoff magazine |
| Sold | Individually |
K120/K400 BB Stop FAQ
Which KWA models does the K120/K400 BB Stop fit?
The standard KWA K120 mid-cap and K400 high-cap magazines. It does not fit the K120c cutoff magazine.
What is the K120/K400 BB Stop diagram number?
It depends on the model: K120 mid-cap magazine part 2; K400 high-cap magazine part 2. 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.
