A Master Ball would be your best choice because it catches any wild Pokemon 100% of the time.
use a poke-ball on it
Ultra Balls are your best bet, and if it's nighttime, you'll want to use Dusk Balls as well.
Metang evolves into Metagross at level 45.
the quick ball and the master balls are the best choice or duskballl at night or in the a cave
you catch it with a poke ball
master ball
with a poke ball
by throwing it
use a poke ball
To catch a pokemon, you require a Poke ball, which you can buy from a poke mart.
the ultra ball is what i used to catch it...but you could use the master ball after you get it
use a master ball