What is this piece in my hand?

The bullet and bullet shells coordinate as a band.

It sometimes be on water or land.

As time evolve, we evolve at the same time that a musket looks like a papergun

spitin' powder while changing into an era with ak-47s releasing six clips within an hour

and the next thing you we speaking "black power".

If life is getting better how come I see the blood getting clearer(?), as the pathway

gets smaller criminals get taller and our souls get sour. 

I say this piece in my hand becomes more human, although it' not worth using.