While the bore is chomed I am told that the chamber isn't, which is a pretty good reason to give it a cleaning lest you get pitting in the chamber and start to get difficulty with case extraction.
At the very least clean the gas cylinder, chamber and the bolt face. Wipe them down with windex, dry and oil. I also discovered on mine that you should wipe the area around the muzzle, since residue from firing will settle there and can start corrosion. While the bore should be okay, I have been told that not even the chrome bore is able to withstand the effects of corrosive salts longterm if left uncleaned, so don't store it away for weeks at a time without giving it a thorough cleaning.
With Regards,
Frank