I received a Mossberg 590 Shockwave in FDE Cerakote Finish as a Christmas gift from my family. I haven't taken it out to the range yet and most likely won't be able to anytime soon, so a range report will have to come later, these are merely my first impressions based on handling it.
The first thing that I noticed was that the action was smooth right out of the box, which surprised me since I had read that a few folks had gotten theirs with somewhat stiff actions which required breaking in. I'm unsure if I'm just lucky, if more recently produced models are simply smoother, or if this can be attributed to the Cerakote finish, which is self-lubricating and rather smooth to the touch.
Speaking of the finish, I wasn't very fond of Flat Dark Earth initially, but it has grown on me since then.
Unfortunately, I was a bit disappointed to discover that the finish is external only. The bore, the bolt, and the breach are merely blued, which is disappointing since I'm used to seeing Cerakoted firearms finished both internally & externally. In addition, the fact that the finish is external only renders it more of an aesthetic finish than a corrosion resistant coating since the internal surfaces aren't coated in it at all. Furthermore, when applied properly, Cerakote is only .0001 thick, which the Shockwave has more than enough clearance between components to accommodate, ergo the omission of Cerakote on internal surfaces was likely due to the fact that it would have required a more involved process overseen by an actual human being.
The Shockwave feels surprisingly well balanced in the hands. Initially, (perhaps too hastily) I expected the Shockwave to feel somewhat awkward, but much to the contrary, it feels good, albeit it does feel more natural to hold it in a hip-fire position as opposed to holding it straight out in front of you as you would a more traditional shotgun with a shoulder stock.
Overall, I'm satisfied with the Shockwave and can't wait to take it out to the range. However, I prefer to do my shooting at outdoor ranges with warm weather, so it will most likely be at least a few months before I take it out to the range, much less have the free time to do so. But then again, with the weather being as erratic as it has been lately, it may be warm outside much sooner than expected.