I'd even look for my dad that I never knew
And show him how I look in my Beretta, too

from Mase (Ft. Black Rob, Diddy, DMX & The LOX) – 24 Hours to Live Lyrics on Rap Genius

Meaning

He’d try to find his long lost father.

Re: showing his father the Beretta- because he specifies that he wants to show him how he looks “in” it, it makes more sense to assume he is referring to the Chevy Car. Some rappers prefer these American racecar-like vehicles to the more commonly rapped about Benzes, Jags etc (The Impala of the 90s?)

Chevrolet car

But you can’t 100% rule out that he might be talking about his Beretta gun, especially if he is angry at his father for abandoning him. There is a chance he wants to kill his dad

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