I think it took about a week to get the box.
My M249S was out and back in 28 days. It came back dirty (just like I sent it), with a couple of supplemental pages for the manual, no explanation of what was done, no answer to the comment I put in the box about light strikes (which they returned), and not so much as an effin' sticker :wink: for the hassle they put me through. I haven't had it back to the range yet.
I never received advanced notice that they were planning to ship, but I did receive a tracking number from Fedex (I'm signed up for address-based alerts, so I think Fedex sent this not FN) once it had already shipped. As someone who travels often for work, this is pretty damn inconvenient. For customer service, FN barely gets a D. Absolutely piss-poor for such an expensive item.
By contrast, Ruger fell all over themselves to turn-around my cheap 22/45 Mk4 pistol that was recalled and make it right.