+ 1 on gunbroker.com (almost 100 G19s for sale there right now) - I've purchased a couple of guns through their site and had them shipped to a local gun shop. Of note, shipping and transfer fees are not always cheap but sometimes it's worth it to get exactly what you want.
"You have enemies? Good. That means you’ve stood up for something, sometime in your life." - Winston Churchill
Suggested gun control movement talking point: "We're OK with guns to keep our families safe, we just don't want you to have them." - Joe