The G3 Twelve is chambered for both 2.75" and 3" 12-gauge shells, providing flexibility for a wide range of defensive, sporting, or training applications. It includes front and rear sights for accurate target acquisition and comes with a full choke tube set to adapt the shotgun's performance to different shooting needs. Specifications and Features: Make: Panzer Arms Model: G3 Twelve Action: Magazine Fed Semi Auto Caliber: 12 Gauge Chamber: 3? Barrel Length: 18.5" Capacity: 5+1 Finish: Black with Green Furniture Magazines: 2 pcs 5 Rounds Sights: Front Polymer - Rear Steel Features: G3 Rifle Compatible Stock & Grip | MP5 Compatible Charging Handle | Compatible with Panzer AR 20 rounds Drum Magazine