I have one more problem with the song 俺はやる by Wanyudo.
The context is as follows (someone transcribed the full lyrics here, the link contains also a live performance of this song without the need for Spotify account):
I don't get what he wants to say by 腹にマガジン巻いて. Otherwise I translate as:
Dropped out of school, went behind bars,
Drank everyday with ex-cons,
With a knife in my hand I came of age,
Living in Tokyo ...
Is it some kind of jargon, or is it a direct meaning of putting a magazine (as a "booklet") to protect one's abdomen?