Do you actually possess A Laser? If not, then looking at pictures is not going to be definitive.
I broke-out the big magnifier and yes - there is a small seam just where the inner “ring” meets the cup. This is not the whole story, however. While the inner “ring” and the cup appear to be separate machined pieces, they do appear to be made of the same material as each other, while the shell is clearly Aluminum - which I think is NOT 7075.
My Take: The outer shell is 2000 series aluminum with a stainless steel inner-ring and cup. I base this on “taste”. Aluminum is tasteless; it creates no sensation on the tongue whatsoever. Stainless, however, creates a slight tingling due to the properties of the metal. The inner ring and the cup both “taste” the same, but differently than the outer shell.
So, Where the ring and cup meets, is very thin. I think they could not make the inner cup in one-piece because the seam area would be too delicate. Therefore, they machined the inner-cup in two pieces. The difference in color that people are seeing is due to the machine-marks and the different angle that they are being seen at.
If I am right, this makes the Laser quite complicated to make.
**** On a side note - while I was looking at my Laser with the big magnifier, I noticed that the outer-shell of my raw Laser is showing some slight oxidation and galling. This is not something I have seen before. I looks as if there is some surface pitting on the outer-rims that is very small and hard to see - definitely not something you can feel. I wonder if this is a 2000 - series aluminum since I have not seen this on 6061 or 7075. Anyone else see this on their Laser?