Marc
"Woah, you know your stuff! Haha, that's mostly a collector's item." He waved his hand aloofly, taken aback by the impressive statement. She could identify it from a glance? That's the real deal for you. He paced around and hoisted the gun off his shoulder, letting the shopkeeper take a better look.
"Antiques like that have their charm... like a sweet old grandma who bakes oatmeal cookies. Sure, it's no chocolate chip, but if treated with love, they are just as delicious! ...That and I got it auctioned at a killer price. It's an original 1884 model."
Basically, he was a cheapskate. However, would a guy embarassed by that manage to smile that confidently?
"If I fire that beauty, it won't jam." He uttered those words as if they were an undeniable fact.