Shop › MSBRG XBBL 500 12/20/VR ACCU MSBRG XBBL 500 12/20/VR ACCU $273.00 Mossberg Barrel, 12 Gauge, 20" Vent Rib, M500, AccuSet Chokes, Blue, Bead Sight, Ported 90140 Quantity: Add To Cart Added! Mossberg Barrel, 12 Gauge, 20" Vent Rib, M500, AccuSet Chokes, Blue, Bead Sight, Ported 90140