There are a few colors that are "matte", with no sheen at all. Mostly the earth tones and they are specified on Lauer's website. The rest do have a gloss to them. The shine factor can be manipulated by the amount of catalyst added to the color portion.
Unfortunately, adjusting the sheen by changing the amount of catalyst might be a trial and error process. I did an old Mossberg 500 that I added a very small amount of extra catalyst (by small I mean less than 1/2 tsp) and the thing shines like a diamond. It's just a truck gun so I am not terribly unhappy but a small deviation in the mix ratios made a big difference for me.