Americans are on track for their third-highest gun-buying year, despite a drop in monthly sales.
A higher minimum age for firearm sales is one of the ideas lawmakers are considering, but Republicans say it wouldn't help.
About 42% of those denials were because the would-be buyers had felony convictions on their records.
The number marks a 41% increase from the same period last year, another indicator of massive gun sales amid the coronavirus pandemic.
The announcement follows a string of mass shootings in the last month, one of which occurred at a Walmart store.
The retailer cited "changing consumer preferences" and "softening consumer demand."
Bass Pro Shops and Academy Sports + Outdoors are still selling military-style rifles like those used in recent mass shootings.
The retail giant said it's making changes to its gun sale policies "in light of recent events."
This year beat the previous record set on Black Friday in 2016.
"I want to get one before there is a push to make them illegal," one Facebook user commented.