Guns were a hot item as Colorado shoppers sought bang for their buck on Black Friday.

The Colorado Bureau of Investigation’s InstaCheck unit, which runs background checks on firearms sales, recorded its largest Black Friday numbers in the history of the unit last Friday.

The InstaCheck team conducted 4,779 background checks for firearms transfers between midnight and 9 p.m. on Friday, according to Susan Medina, CBI spokeswoman. The total breaks the previous record, 4,329 checks set on Black Friday last year.

Black Friday is traditionally the busiest day of the year for the unit. CBI can’t say how many guns were sold, because a single background check could cover multiple weapons.

Medina said 41 InstaCheck employees worked 10-hour shifts to conduct the checks. The unit also expanded operating hours to 21 hours on Friday from 12 hours on a typical day.

“Because the Black Friday shopping event tends to be the heaviest volume day for the CBI InstaCheck Unit, the team worked to configure staffing and expand hours of operation to meet the demand,” CBI director Ted Mink said.

The FBI also set a record on Black Friday, receiving 203,086 requests for background checks. The previous national record of 185,086 requests was set the day after Thanksgiving last year.

That’s not an anomaly. According to the FBI, the previous two records for background checks also were also set on Black Fridays.