One of the biggest makes is Raytek.
They have numerous models, but the best for accuracy and moderate price is the "mini temp food safety" At plus/minus 1 degree C has higher accuracy at the lower temps. Most are only plus/minus 2 degrees C, which is almost 4 F degrees, and as Jeff Favelle once said, you can guess closer than that. Most IR heat guns aren't as accurate as people think.
The Mini temp food safety model, looks the same as the MT4 but is a different color.(white) They run about 150 CDN. You can get them from industrial and food wholesalers. Got mine from Anderson Controls
Here's a link to the spec page on Rayteks site