Key Specifications Gauge & Capacity: 12 gauge, 3″ chamber with 5+1 capacity Barrel: 18.5″ cylinder-bore “breacher” barrel with bead front sight Action & Lock-up: Pump action featuring dual extractors, steel-on-steel lock-up, twin action bars, and anti-jam elevator Safety: Ambidextrous top-mounted tang safety Stock & Grip: Synthetic stock; many models include forend strap and slin... https://www.prime-firearms.com/product/mossberg-500-tactical-12-gauge-18-5-51/