Multi-Launch-Rocket-System is an addition to my Goliath Tank that allows you to add additional rocket launcher to goliath tank.
Link to Goliath Tank: http://www.planetminecraft.com/project/goliath-tank-from-battle-nations/
Weapons

Rocket Launcher (In the map i called it Recoilless Rifle because version that i created was unable to shoot like MLRS from Battle nations)can shoot 24 TNTs at once or 3 TNTs from launcher of your choice.You can control it from the "Bridge" of MLRS..

Anti-Trooper Barricade- I Really don't know why i have added this to MLRS. It is just a row of dispensers that shoots tnt. I can be triggered from Security Room.

Self-Destruct Mechanism - Every mad scientist invention has one in so why this shouldn't?

Connecting to Goliath tank

On the side of the goliath tank there is hole surrounded by red clay and you have to conect it (in McEdit) with quartz blocks on the side of MLRS.
From outside it should look like on the 6th screenshot
And from the inside it should look like on the 7th screenshot

Additional info
 
On one picture is shown where is secret entrance to lower level of MLRS.
Also remember to check behind paintings for secrets.
There is small chance that rocket launcher might backfire.