Military Armament Corporation 21000154: The MAC 1014 shotgun is based on the iconic firearm that has served troops around the globe for over two decades being synonymous with the GWOT and prized by the troops who carried them. MAC is proud to offer this proven self-regulating piston design shotgun, renowned for its effectiveness, ease of maintenance and unrivaled reliability with a wide range of loads. All MAC 1014 shotguns come from the factory with a preinstalled picatinny style rail with a ghost ring rear sight that is windage/elevation adjustable, 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.