Yes, it's available but not commonly used so most HVAC contractors don't keep it on their trucks. In the US, R410A is being replaced with R454B which has less environmental impact than R32.
Fyi, since it seems like a lot of people don't realize that R32 is one of the component refrigerants that make up R410A. R410A is a blended refrigerant made up of 50% R32 and 50% R125. That's why you have to charge R410A as a liquid. If you charge it as a gas, you'll first draw out the R32, then once that gone, you'll get the R125. But you'll screw up the ratio of the remaining R410A in the cylinder
