First, a disclaimer: Labeling a voice type isn't something that is merely based on range - it's as much an issue of quality and agility (though admittedly less-so for male voices). Beyond that, you're an untrained singer. With training, not only would the extremes of your range likely extend, but the relative ease of singing in certain tessituras would be more evident.
That being said, based on your recordings, I think it's pretty safe to say you're a tenor. It doesn't sound like you have many notes below C3, and the overall quality sounds tenorish to me. Plus, the fact that you have a decent F4 and G4 without training is not at all typical of lower voice types.
Further training and diagnostic exercises would allow a voice teacher or vocal coach to make more specific qualifications.