Portable gaming device Nvidia Shield has been delayed into July, one day before it was scheduled to launch.

Explaining the delay, project manager Jason Paul said a mechanical issue was detected during last-minute quality assurance testing.

"The issue relates to a third-party mechanical component, and we're working around the clock with the supplier to get it up to our expectations," Paul said.

"We apologize to those who have preordered Shields and to all those who are waiting for them to go on sale. But we want every Shield to be just right," he added.

Just last week, Nvidia announced that the Shield would launch June 27 for $300, a $50 markdown from the portable's previously announced $350 price tag.

Paul said at the time that the new price point will make the device a "home run."

The Nvidia Shield gives gamers access to an array of gaming avenues, including Nvidia TegraZone, Google Play, and Steam. The system runs on the Tegra 4 processor and boasts 16GB of memory, GPS, Bluetooth 3.0, a mini-HDMI output, a microSD storage slot, and a headphone jack.

The device also features a five-inch, 720p multi-touch display. For more on the Nvidia Shield, check out GameSpot's preview of the device from the 2013 Consumer Electronics Show earlier this year.