Summary: We are beyond ready for sensible regulations that can help prevent would-be mass murderers from having such easy access to these killing machines. The shooter in Uvalde, Texas, reportedly bought two AR-15s on his 18th birthday. He couldn’t rent a car at 18 or buy alcohol, but he could buy rifles no teenager could possibly need. The Boise Towne Square shooter was a convicted felon but could carry in Idaho because of lax gun laws. ... Higher age restrictions, mandatory training and licensing, background checks for all sales and “red flag” laws to keep guns out of the hands of people with domestic violence protection orders are all reasonable ideas.