The Mossberg 590S Shockwave is a compact 12 gauge pump-action shotgun featuring an 18.5" matte blued steel barrel and distinctive Raptor Birdshead Grip for enhanced control and maneuverability.Mossberg 590S Shockwave 12 Gauge ShotgunPump action with 10+1 shell capacity18.5" matte blued steel barrel with bead front sight3" chamber accommodates various shell lengthsBlack anodized stainless steel receiverRaptor Birdshead Grip for compact handling30.75" overall length 5.5 lbs weightFixed cylinder choke configurationDesigned for close-quarters applications and tactical use this compact shotgun offers the reliability of Mossberg's proven 590 series in a highly maneuverable package ideal for home defense and specialized shooting applications.