3M PPS Cup and Collar, 16023, Large, 1 per carton

I debated going with this system, but after spraying epoxy and 2k primer on my fenders, hood and trunk lid and having to spend a good amount of time cleaning the gun afterwards, especially the cup, I decided I needed to try this system and I am glad I did. And, I am glad I went with the Large cup as it's just the right size for me and holds more material, which minimizes the use of liners. If I knew about this system when I purchased my spray guns, I would've purchased them without the cup and used the savings to purchase this kit. I epoxied my doors today and when I cleaned the gun, I literally just used maybe a couple ounces of Acetone - just a couple fills in the gun until it ran clear and then sprayed some Acetone through the gun the with air line attached. I kept thinking that I'm missing something, so I tore the gun down to be sure and it was clean. It took way less time and material (i.e. Acetone, rags etc) cleaning with this system. I just tossed the liner and was done. Unless something weird happens, I won't be going back to using the regular cups. For now, I am sticking with the 3M PPS system. I highly recommend this system, even if you don't paint often. It's worth it's weight in gold. Less time, less mess.