I put a modded http://fallout.wikia.com/wiki/Anti-materiel_rifle_%28GRA%29 and ammunition in her inventory, hoping she would use it instead of her little shotgun. She used it for a couple fights, then lost it somehow, perhaps when we entered and left a casino.

I'm a little ticked by this bug, so I tried to use a console command to replace the gun, which seemed fair enough. I could get the regular version, but not the GRA version. For that, I need a two-digit code, and I have no idea how to get it.

I'm playing the Ultimate Edition of the game, which has all the DLCs.

I don't want to install another mod just to get the two-digit code.