Yikes. "AR-15s, which once accounted for a small fraction of guns produced in the United States, now represent nearly 1 in 4, according to industry and government figures."
https://www.washingtonpost.com/nation/2023/03/27/ar-15-facts-what-we-learned/

We spent more than a year examining the AR-15’s role in America. Here’s what we learned.
The AR-15 is more than a weapon. It’s also a symbol. This investigation sought to understand the rifle’s impact, and here’s what The Post learned.
The Washington Post