Military Arms of Ostrava

Military Arms of Ostrava (MAO) is a fictional arms manufacturer based in, as its name suggests, Ostrava, in the Czech Republic. Several of their products are featured in Deus Ex: Human Revolution.

Products
MAO Produces the PAX-22 Tranquilizer Rifle, a single shot, break-action tranquilizer gun intended for use on animals, however they are sometimes used to incapacitate humans without killing them. MAO does not produce the darts, rather they are manufactured by Kaiga Incorporated.

The Widowmaker TX, a semi-automatic shotgun, is also produced by MAO. The TX is fed by a 6-round drum magazine, and can be modified in several ways, including a 2-round burst. These are a fairly popular shotgun, being used by several agencies such as the Detroit SWAT unit.

MAO is also known for producing Riot CS, or gas grenades in-game. Riot CS knocks out organic enemies caught in the gas cloud after being thrown.

In the book Deus Ex: Icarus Effect, Secret Service Agent Anna Kelso speaks of a nondescript MAO Submachine gun used by the Juggernaut Collective. This gun's low price and ease of use have made it and the HK MP5 the weapon of choice for terrorists, revolutionaries and other paramilitary groups worldwide, replacing the 80-year old AK47.