High-Efficiency Atomization: Equipped with the #410 HE (AV-440-410) air cap, this DeVilbiss GFG model provides robust material breakdown, contributing to a superior. Devilbiss part number GFG-670. Durable Construction: Built with a CNC-machined aluminum gun body and an anodized finish, the DeVilbiss GFG-670 Plus is designed for extended service life in daily.