Do they make bras for men with gynecomastia?

Manzier? Custom bras can be made for men. Check with doctor or google it to find who makes them for women. You may wish to consider surgery (yes, I'm a surgeon) however which can be very effective.
Why? If a man feels he is large enough to need a bra then he should buy a bra in a manly color. Under armor makes elastic shirts that help conceal breast size.
Custom Bra. The seinfeld episode made a point of this. However, custom bras can be purchased in most areas.