Same here, use the bore snake after a couple of outings and thoroughly clean it when groups start yo open up.Well made weapons generally come dirty. I personally like to know they were test fired. In fact, the dirtier the better. All four SCARs I have came dirty when I received them. Just clean and lube before shooting it the first time.
The SCAR stays so clean that I don't do a full clean on them often. I just run a bore snake through the bore a couple times and sometimes wipe down the bolt and re-lube it. Complete cleanings after maybe 4 or five shooting trips. I use SLIP 2000 EWL and a little action grease sometimes on the SCARs. And FireClean on ARs.