JTS M12AR B1 12GA AR-Style Shotgun, 18.7in Barrel

The JTS M12AR B1 is an AR-pattern, semi-automatic 12 gauge shotgun built for modularity and adaptability. It features an 18.7-inch chrome-lined barrel and a 4-position adjustable gas system to tune operation for a variety of 2 3/4″ and 3″ loads. The shotgun ships optic-ready with a top Picatinny rail, accepts Rem choke tubes, and includes two 5-round box magazines for quick reloads. The receiver and furniture are finished in black with a synthetic tactical stock and polymer forend.

Key Specifications

• The gauge is 12 Gauge.
• The action is Semi-Auto.
• The barrel measures 18.7 inches.
• The chamber accepts up to 3-inch shells.
• The barrel is 4140 chrome-lined steel.
• The gas system is a 4-position adjustable design.
• The shotgun includes two 5-round box magazines.
• The top of the receiver features a Picatinny rail for optics and accessories.
• The firearm is compatible with Rem choke tubes.
• The stock material is black synthetic with a tactical profile.

Optic-ready and purpose-built for adaptability, the M12AR B1 combines an AR-style platform with familiar shotgun functionality to support a range of practical uses from tactical applications to general-purpose shooting. Its adjustable gas system and chrome-lined barrel are aimed at dependable cycling across common 2 3/4″ and 3″ loads, while the included magazines and Picatinny rail provide immediate modularity out of the box.