Easy install. I know it's been mentioned that the 20ga. model holds the shells a little lose. The one I received has had multiple rounds put down range after it was mounted. No issues of shells moving, falling out. Have seen pictures of these mounted, carrying the shells brass facing down. I can see where the vibrations from walking, running, firing may cause the shelles to drop out. The weight of the round alone + gravity work against you. I carry mine brass up. No way they will slide through and fall. Even when faced with the shock of firing the shotgun.

Product still a little oversized for the 20 gauge. Needs some downsizing.

Very nice fit, easy to install on a mossberg 590 20 gauge. It is a good idea to have a small socket set to tighten one net slightly. Otherwise it was smooth sailing putting this on and looks great, I highly recommend it.