SureShell Alum Carrier for Moss 500/590 (4-Shell, 20-GA)
SureShell shotshell carriers are available in two configurations: four-shell and six-shell configurations that can be installed on the left side of the receiver. Carriers can also be installed pointed back toward the stock.
The principle difference between one model of SureShell and another, aside from capacity, is the backing plate, which is designed to mount the carrier assembly on a particular model of shotgun. Side-mount SureShell shotshell carriers for Mossberg 500/590A1/MAV 88
