The Colorado Bureau of Investigation says it saw a record number of firearms background checks on Black Friday, a day that’s already typically the busiest of the year.

Between midnight and 9 p.m. on Friday, CBI says its InstaCheck team reported 4,779 background checks. By comparison, there were 4,329 requests in 2016 and 4,115 in 2015.

Instacheck employees work long shifts on Black Friday to accommodate the higher demand.

These technicians analyze eight different federal, state and local databases to ensure buyers can legally own guns, according to the CBI.

Nationally, the FBI received more than 200,000 background check requests for gun purchases on Friday – also a record.

The surging numbers came just a few days after Attorney General Jeff Sessions ordered a sweeping review of the background check system following the news that a court martialed Air Force veteran was able to purchase the firearms used in an attack at a Texas church that killed 25 people.