Received from Aircraft Spruce the Blue Pneumatic Rivnut Gun. Began working with it to set it up for 6-32 Rivnuts. Discovered that the mandrel was not long enough for the rivnuts.
Update: Ordered 5 replacement cap head screws 6-32x1 5/8". These should be the correct size for the rivnuts. Once installed, I whould be able to set the tool up for the rivnuts.