12 GA – Shoots 2 ¾and 3shells – 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