Mag Rail

The Mag-Rail is a weapon in Deus Ex: Invisible War. It is first obtainable at the Mako, after which enemies (particularly Commandos) will begin to somewhat commonly possess them only in the latter half of the game. It's alternative fire mode is a beam that can shoot through walls.

Tactics
A fairly strong gun, the Mag-rail has mediocre fire rate and range. It's most useful for its alternative fire, although using it for such is dubious at best, since it does require the user to be accurate through walls, necessitating Vision Enhancement or some other form of assisted aiming interface.