modding a 38 pipe pistol or a 45 pipe revolver pistol (no other weapons affected what i've seen)

with a "stub barrel" and no other mods back to "short barrel (standard)" reproducably ctd's my game.

it only happens with 3 or less pieces of that weapon, extremely likely (2/3 ctd chance) with the last one from a stack,

and more likely with more total weapons in inventory.

please fix, thx

edit: win 8.1, no mods and i run the beta update

Ooo very specific. Can this be reproduced by adding the barrel to a gun without one, to start it off? I can test this out to if so.