It probably does. Here's references.
Here's a pix of chick grit
Here's a pix from butchering (from another BYCer- Frugal)
Grit he found in the gizzard:
Imp
Grit for pet cage birds often is fortified with calcium. Not such a good idea for little chicks. Check the label.
I've never heard that adult chickens cannot have pet store grit. It would be a rather expensive option.
Here's a pic of chick grit from the feedstore. Hens can use bigger grit, but...