She needs the Peacemaker or the Lightning, both by Colt.

That is what she is referring to. She has the Colt 1860 Army.

Well the Colt 1872 which is known as the Peacemaker (or Single Action Army) was THE revolver of the Wild West. Slightly bigger caliber but was a slap shooter: the trigger only discharged the weapon unlike the Colt Lightning which was double action where the trigger cocked AND fired it. However, the man who killed Billy the Kid, a man famous for using the Lightning, used a Peacemaker.

dear god we're both fire arm nerds ^^;;

She will be getting a peacemaker though. I've had that planned for awhile.

I've had to do a lot of research into firearms from that time period (around 1874-1877). The Colt peacemaker is really starting to take hold, the lightening is still a year or two off. You can still readily find the Colt 1860 Army, the Remington new army, and a couple dozen other pistols and rifles.

We'll for rifles, you can't beat a Winchester.