Torrey Pines Logic is coming out with thermal sights you can mount on guns. The T10M model is the thermal sight you can mount on gun and it is priced at $699. It takes CR123 battery and can be used for 8 hours.
Torrey Pines Logic also has non-military model T10S that can be mounted on user's wrist. It will be sold for $499
Website:
http://tplogic.com/products/commercial/thermal-imaging-comm/t10-commercial/
Article:
http://gearscout.militarytimes.com/2015/01/29/a-thermal-small-enough-for-a-pistol/
From: Gear Scout