According to a Customs and Border Protection statement, it was "powerful enough to sling two bundles of weed - weighing a combined 47 pounds (21kg) - into the United States from Mexico".
Officials said they later dismantled the device - but not before taking a photo of it, which they lightheartedly posted on social media:
There were no reported arrests associated with the incident.
This certainly isn't the first time an instance like this has occurred.
In September last year, Mexican authorities discovered and seized a van that had been modified to be used as a drug catapult.
It reportedly had an air compressor, a gas engine, storage tank and three-metre metal tube likened to a "homemade bazooka".
Apparently it's true that drugs can make people more creative!