Firearm purchases require a background check and must be picked up in person by the purchaser
SBR transfers will not be accepted 
The F.LLI Pietta Great Western II is a single-action revolver available in various configurations in .45 Colt, with common specifications including a 6-round capacity, exposed hammer, and a case-hardened frame with a blued barrel. Barrel lengths vary significantly by model, ranging from 3.5 to 7.5 inches or more, so you must check the specific model's details. Other features like grips, finish, and sights also differ between models. 
Common specifications
Action: Single Action
Caliber: .45 Colt
Capacity: 6 rounds
Hammer: Exposed
Grips: Vary by model (walnut, synthetic, etc.)
Sights: Typically a fixed front blade and a rear notch in the frame 
Examples of specific models
Sheriff: 3.5-inch barrel, often no ejector, walnut grips
Californian: 4.75-inch barrel, walnut grip
Buntline: 12-inch barrel, walnut grips
"The Hands of God": 5.5-inch barrel, blued finish, synthetic grips with a gold crucifix
"Last Stand": 7.5-inch barrel, aged finish, brown checkered plastic grips