I've got the vortex viper on my new 590. Haven't had the chance to shoot with it on, but it seems to be low enough to provide an acceptable check weld. I do have the 12" LOP hogue stock on with a limbsaver pad to bring it to about 13".
Edit: I should point out that I'm using the NcStar...
Hi everybody! I have a 590 7-shot model being shipped to an FFL near me, specifically model 50778. While not my first shotgun, it will be my first modern one (currently own a Winchester 1897 and 12). Pleased to meet you all.