It is very easy for an 18-year-old with no history to get a credit card. The system works differently at that age. Credit card companies love to give credit to young fools with long futures.
How do they do this while technically not discriminating based on age? It’s called a student card. You CAN require the person to be enrolled in a school to qualify. Boom. The very few older students with no history that might apply are easily outweighed by the millions of young fools that get one.
As for how the shooter got his weapons, according to DPS, a young man, who had recently quit his job at Wendy’s, used a debit card to purchase two rifles (at least one of which was an $1,800 Daniel Defense AR), 60 magazines, and over 1,600 rounds of ammunition, at least some of which were with him in his backpack.Uvalde Shooting Update: Tragedy, Good Work, and Unimaginable Error
Ramos purchased at least two semi-automatic rifles for his attack from Oasis Outback, a local hunting and fishing store, just after he turned 18, according to the timeline of events predating the shooting. He made the purchase with a debit card and tried to get his sister to purchase a gun, but she declined, according to McCraw.Uvalde shooter was carrying more ammunition than most soldiers in combat: Report
When asked how the 18-year-old suspect bought the expensive weapon, McCraw said he used a debit card. “Why and how is being looked at, and thousands of more leads are being looked at right now because we haven’t answered all the questions,” [Steven McCraw, the director of the Texas Department of Public Safety] said.The Uvalde Shooting Suspect Bought More Than 1,000 Rounds Of Ammunition
I, too, await answers to all those questions, including 'how' he managed the purchase.