12 GA – Shoots 2 ¾”and 3”shells – Picatinny Rail – Chrome lined barrel – 4-Position gas system for adjustments based on loads – Fits Rem Choke tubes – Comes with two 5 round magazines – Barrel Length: 18.7” – Overall Length: 37.99” – Aluminum forearm with MLok Slots and Two Side Plates – Removable Front and Rear Sights