Yes. Basic math. 81,000,000 legal gun owners. Take 10 percent of that. 8,100,000. Take 10 percent of that to get to 1 percent of 81,000,000. So 810,000. Then 10 percent that to get to the .1 figure I mentioned.
There isn't 81,000 shootings in the US every day. You're welcome for the source.