Aaahhh...yes, young one. At first you must gather a large collection very similar items...Contender barrel for example. When attached to a frame and wear like hardware (Pach's, wood, etc) they all look very much alike...it is a rare female that can tell a scoped .22LR Contender from a scoped .338JDJ#2 when entering or exiting the house.
When you branch into other handguns you must tell her of the first purchase then buy more later that look like the first!! That yound grasshopper is the secret!! AND...pay cash as often as possible...elimnates the papertrail...