I've had a Master Mite 10008 for decades:
Enjoy hands-free operation on benchtops without blowing components around the workstation by choosing our Master-Mite heat gun today. Click now to find the perfect model!
www.masterappliance.com
Mine says "Made in USA", but their web site says "Engineered and assembled in the USA using domestic and foreign parts"
I used it extensively for delicate electronics work, but these days I use it mostly for heat shrink. This is a relatively low flow gun; 3.8CFM, which is ideal for the electronics bench, but if you need to blast hot air, this isn't the tool you want.
EDIT: Master has some pretty high flow guns, such as:
There is only one Master Heat Gun. The industrial heat gun invented by Master in 1958, has been North America’s #1 professional heat gun of choice for industry for the last 60 years. Heavy duty, high airflow, the workhorse of heat guns.
www.masterappliance.com