Updated

A spike in requests for background checks on firearms buyers in Colorado has overwhelmed the system that businesses use to track how long the checks will take.

The Colorado Bureau of Investigation's online wait-time clock for background checks tops out at 99 hours and 59 minutes. The Denver Post reports the wait is now more than 100 hours, leaving potential buyers to guess on exact wait times.

The checks once took minutes, but request for background checks spiked after the school shooting in Newtown, Conn.

The lag comes with the Tanner Gun Show set to start this weekend. The show's co-owner Ty Blount says the lag means dealers will either mail a gun to a customer or meet the customer again later once the background check has cleared.