rebs, it's mostly a "general principles" thing. Insurance. With a gun that is new to me, I commonly at least field strip it and check it over, doing a light oiling and just running a patch through the barrel.
As a for instance on this "take it out of the box and shoot it", I found that my brand-new 700 Ti had been assembled with the bolts at maybe 20 inch-pounds of torque, not the specified 60 inch-pounds.
You never know...
You're from BATFE? Come right in! I use all your fine products!