Some pros of this launcher are:
-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
-long reload time (about a minute)
-no magazine (single fire)
-the top moving panel is annoying
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The launcher uses a lot of rubber bands (about 10, but depending on the rubber bands, you could have less). The instructions for the rocket is also included.