I am not too sure why this map is called Parliament. It seems to be talking about the area around the London Big Ben but when you are in the map, you are playing on some warships.
The interesting thing about playing in this map is that it is a large map. IMR is a difficult rifle to use but it is very accurate and very good for long range shot. I basically played on the rim of the map and used a changeable lens for aiming.
Map: Parliament, Weapon: IMR