22 here, and because there are so many younger people who walk into the stores around me and ask about "Glock .45's" while not even knowing the slightest thing about guns is the reason I haven't been given the time of day sometimes.
Luckily, every gun shop near me is used to seeing my face and I've purchased at least one gun from each of them and have been in the stores several times. Usually if they stand there and won't help me, I'll just throw out a question to show them I actually know something. That, or go with someone else and tell them the pros and cons of a certain gun. That gets their attention sometimes, and they'll chime in.
Luckily, every gun shop near me is used to seeing my face and I've purchased at least one gun from each of them and have been in the stores several times. Usually if they stand there and won't help me, I'll just throw out a question to show them I actually know something. That, or go with someone else and tell them the pros and cons of a certain gun. That gets their attention sometimes, and they'll chime in.