public class Weapon : MonoBehaviour
{
    [SerializeField] private ShootType _shootType;

    public void Init(WeaponConfig weaponConfig)
    {
        if (_shootType != null)
        {
            throw new ArgumentException();
        }
        _shootType = weaponConfig.GetShootType();
    }
}

public abstract class ShootType
{
    public abstract void Shoot();
}

public class WeaponConfig
{
    [SerializeField] private ShootType _shootType;

    public ShootType GetShootType()
    {
        return _shootType;
    }
}

public class WeaponSpawner : MonoBehaviour
{
    [SerializeField] private Weapon _weapon;

    public Weapon CreateWeapon(WeaponConfig weaponConfig)
    {
        var newWeapon = Instantiate(_weapon);
        newWeapon.Init(weaponConfig);
        return newWeapon;
    }
}