What's in the Box MAC 1014 Breacher 12 Gauge Semi-Automatic Shotgun with 18.5 Inch Barrel Owner's Manual The MAC 1014 shotgun is derived from the iconic firearm that has served troops around the globe for more than two decades, and is synonymous with the GWOT and prized by the troops who carried them. MAC is excited to offer this proven self-regulating piston design shotgun, most notably known for its effectiveness, ease of maintenance and unrivaled reliability with a wide range of shotgun loads. All MAC 1014 shotguns come from the factory with a preinstalled picatinny style rail with a ghost ring rear sight that is adjustable for windage/elevation, and adjustable front post with contrasting white dot that is also adjustable for windage. The 18.5 barrel features the Benelli/Mobil pattern choke tube system for consistent patterns that can be tuned to any shot type load. Firearm Specifications Manufacturer: Military Armament Corp (MAC) Model: 1014 Breacher Caliber: 12 Gauge 3" Chamber Barrel Length: 18.5" Overall Length: 40" Finish: Black Anodized Grips: Polymer Sights: Ghost Ring Rear/Blade Front Magazine Capacity: 5+1 Additional Features: Choke Tube: Benelli/Mobil 1/3/5 Included