The Thompson/Center .500 S&W Encore 15" Pistol Barrel is what you need to change the caliber of your firearm. This barrel is muzzle tamer ported, and comes in a blued finish.
Specifications and Features:
Caliber: .500 S&W
Length: 15"
Ported
Drilled and tapped
Blued
Specifications and Features:
Caliber: .500 S&W
Length: 15"
Ported
Drilled and tapped
Blued