Hi I recently purchased Halo 5 Guardians and have been playing multiplayer arena Free-for all and every time I hop into a game I get the same gun called the Assault rifle. Now I would like to try out other guns like the DMR and the SMG but unfortunately I am new to halo and would like to know how switch through weapons.
You walk over to a weapon on the map and hold X to pick it up.
^ See above. Also, press Y to cycle through held weapons.