Shop › ADAPTIVE SHL CARRIER MOSS 500 6-12GA ADAPTIVE SHL CARRIER MOSS 500 6-12GA $44.99 Adaptive Tactical Shell Carrier, Fits Mossberg 500/590/88, 12 Gauge AT-06000-M Quantity: Add To Cart Added! Adaptive Tactical Shell Carrier, Fits Mossberg 500/590/88, 12 Gauge AT-06000-M