Widowmaker TX

The Widowmaker TX is a weapon in Deus Ex: Human Revolution.

Background
The Widowmaker TX is a 12-gauge semi-automatic tactical shotgun made by the Military Arms of Ostrava (MAO) located in Czech Republic.

Characteristics
Very effective at short range, this modern shotgun uses a unique rotary magazine system. The magazine holds 6 rounds by default, and with mods can hold up to 12. The Widowmaker has three Picatinny accessory rails, mounting a standard iron sight on the top rail.

Upgrades
The Widowmaker TX can accept a burst-fire mod, so that it shoots 2 shells every time the trigger is pulled.

Behind the scenes

 * This weapon is obviously inspired by the SRM Arms M1216 shotgun; specifically, the 10-inch barrel 1208 model with an 8-round magazine.
 * This weapon was ported into Team Fortress 2 as a promotion weapon for the Engineer class, where it doesn't need to reload and instead, uses the Engineer's metal for ammo, consuming 30 metal with each shot and returning metal equivalent to the amount of damage, it lacks the front grip that is standard with the weapon and is a bit more cartoonish in the Team Fortress 2 incarnation.
 * Early information suggested that the shotgun would have the option of firing "special anti-mech rounds." Presumably, at one stage it was planned for the game to feature multiple ammunition types for each weapon, but in the final game the shotgun can only use buckshot rounds.