Rifle model bug for Munitions Mastery on Dual Pistol Blaster

[Luna Eclypse]

Ran into this bug on my Dual Pistols Blaster with Munitions Mastery.
The Assault Rifle conflicts with the right handgun slot.

If you have both of the pistol models you want chosen, the rifle will be invisible.
If you go to select a rifle model, the right pistol will be invisible.