I do not know what the Glock finish is.
I always wanted to get a Glock but after using this SAR9 I do not see how it could be much better (other than mags and accessories are all over the place for Glocks, but I do not plan on making any changes to the SAR9). Trigger is great, it's accurate and reliable, and fits my hand like a glove. I bought extra magazines and that's all I needed. Now that I have this I see no need to look at Glocks.