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🎨 Upgrade your spray game—precision meets productivity!
The Master Elite Paint System MPS Spray Gun Cup Adapter 840 is a precision-engineered 1/4" male BSP threaded adapter designed to convert Iwata Supernova LS400, WS400, and select spray guns for use with the Master Paint System disposable liner and lid system. This durable adapter enhances spraying efficiency by enabling quick liner swaps, reducing paint and solvent waste, and eliminating cleaning labor, making it ideal for professional use with a wide range of coatings including automotive paints, primers, epoxies, and commercial finishes.









| ASIN | B08Z2QH48D |
| Best Sellers Rank | #64,100 in Automotive ( See Top 100 in Automotive ) #62 in Body Repair Paint Spray Guns |
| Brand | Master Airbrush |
| Brand Name | Master Airbrush |
| Color | Multicolor |
| Customer Reviews | 4.6 out of 5 stars 169 Reviews |
| Included Components | 1 x Spray Gun Cup Adapter |
| Manufacturer | Master Airbrush |
| Model Name | Master Paint System MPS Spray Gun Cup Adapter |
| Model Number | MPS-840 |
| Part Number | MPS-840 |
| Special Feature | Gravity Feed |
| Special Features | Gravity Feed |
| UPC | 848849068238 |
C**S
Fits perfectly on the iwata ws 400
Good quality. Fits well on my iwata ws400
S**E
Durable Paint Spray Gun Adapter
The adapter fits my spray gun perfectly and feels solid when installed. There have been no leaks and the airflow has been smooth so far, made switching setups a lot easier.
T**D
Works fine
It screwed into my Iwata, and holds a paint cup. That’s all I needed it to do.
A**R
Correct fit
Just as advertised. you should have this available when you order the cups. took me a while to find the correct adapter
P**O
Completamente complacido
Mi esposo quedó muy satisfecho
O**.
Perfecto
Es perfecto recomendado
W**.
For Iwata Kiwami
Fit perfectly for the iwata kiwami.
M**G
Fits and feels fine just a little concerned about longevity as it’s made of plastic
Adapter fits well to ANEST IWATA KIWAMI4 and works well with 3M PPS V1 system. My only concern its made of plastic so longevity is questionable. I wish harbor freight sells compatible adapter as this one is no match to metal and 6.99 harbor freight item.
Trustpilot
1 month ago
5 days ago