The gun shoots my own kind of big projectile (see the X1), and is very powerful. Some pros of this launcher are:
-very strong
-can shoot many different projectiles, of different sizes
-accurate(for a grenade launcher)
-range of 25+ feet (depending on what RBs you use)
-the rocket has lots of stopping power
-looks cool

Cons
-long reload time (about a minute)
-no magazine (single fire)
-the top moving panel is annoying
-fairly heavy