The Mirka Stainless Steel PCS Spray Gun Adapter, Model Number 9190171103, is a connection piece for paint prep and spray finishing setups. This is a spray gun adapter designed for connecting a paint cup system to a spray gun. If you are using Mirka paint mixing products in an automotive finishing workflow, this part is what makes the system usable with the correct gun connection.

This specific version is Size 3, and that is the part buyers need to pay attention to first. With spray gun adapters, the sizing is not a small detail. It is the whole point. The right adapter gives you a proper interface between the cup system and the gun, which helps keep your paint transfer setup straightforward instead of turning a routine mix-and-spray job into a fitment problem.

Mirka builds this adapter from stainless steel, which is the right material for a part that lives around coatings, solvents, and repeated cleanups. According to the product data, all parts of the adapter are corrosion-resistant to both paint and thinner. In real shop use, that matters because this is not a one-time-use fitting. It is a working part that needs to hold up through repeated installs, removals, and exposure to finishing chemicals.

The Mirka Stainless Steel PCS Spray Gun Adapter fits into the broader Mirka Paint Mixing range, which includes mixing cups, lids, systems, and dispensers. That makes this more than just a generic fitting. It is part of a system built around paint mixing and paint application, which is especially useful for shops trying to keep material handling organized from mixing bench to spray booth.

From a practical standpoint, this kind of adapter matters because it helps reduce interruptions in the finishing process. When your cup system and spray gun are matched correctly, you spend less time improvising connections and more time spraying. For automotive refinish work, where consistency, cleanliness, and chemical resistance all matter, a proper PCS spray gun adapter is not optional.

This Mirka adapter is best suited for automotive finishing professionals and serious users running a dedicated paint mixing system. If you already work with Mirka paint cups and need the correct hardware to connect them to your spray gun, this is the sort of small part that makes the whole setup work the way it should.

Mirka Stainless Steel PCS Spray Gun Adapter: Small Part, Big Workflow Difference

If you run a Mirka paint mixing setup, this is the kind of part that earns its keep by keeping the cup system and spray gun talking to each other without drama.

• Who it's for: Automotive finishing pros and refinish users who need the correct Size 3 adapter for a Mirka PCS paint cup setup.
• Why it stands out: Stainless steel construction and corrosion resistance to paint and thinner make it a better long-term choice than a cheaper fitting that lives in the same chemicals every day.
• Worth knowing: This is a fitment-driven purchase. The size matters, so make sure Size 3 is the adapter your spray gun requires.

• What does this adapter do? It connects a paint cup system to a spray gun.
• What material is it made from? It is made from stainless steel.
• Is it resistant to finishing chemicals? Yes. The product data states that all parts of the adapter are corrosion-resistant to both paint and thinner.
• What size is this version? This SKU is Size 3.