The IWAO-R Chaingun was originally built for Japanese combat planes by legendary weapon designer Iwao Ryusaki. The cannons were light enough that they were easily modified for infantry use. Its rapid rate of fire and large ammo capacity makes the IWAO-R a force to be reckoned with in the skies or on the battlefield for it can rip even a Titan in just seconds. It appears to be the direct predecessor to the HVAP Wraith, due to the built in shield, but carries less ammo. It is so far exclusive to Resistance: Retribution.