Ohhh, Ohhh , l have an answer ! (At least if l don't make it personal to me .)
I'm frequently volunteering at the booth for my 2A Org . In addition to the legal & political outreach , our Charter includes Education , and we enjoy occasionally fielding pure gun related stuff .
A common one is " I'm / we're think about getting a Handgun , what should we look for ? " . A couple of follow up questions for them , but usually :
First , and potentially only handgun . Home defense, range , maybe CCW . Further follow up , they're usually having semiauto in mind , even with my obligatory " don't rule out Revolvers " .
Default answer :
9mm , with polymer or aluminum frame .
Grip just long enough for all your fingers , but little more .
Bbl length of about 4 inch , or a bit less .
Operating system that you can handle reasonably well.
" What fits Me isn't what fits You and vice versa , you need to try in Your hands ."⁸
Then pull out the solid plastic blue training guns , of the most Popular gun , of the two most common size categories , for them to get a general feel .