Creating a barrel with a 1/2×28 thread pattern involves precisely machining the exterior of a barrel to accept devices such as muzzle brakes, suppressors, or flash hiders. This threading specification, standardized across a wide variety of firearms, indicates a diameter of one-half inch and 28 threads per inch. As an example, a 9mm pistol barrel is commonly threaded to this specification.
The implementation of this threading provides versatility for firearm customization and performance enhancement. This standard allows for the interchangeability of muzzle devices across different firearms chambered in appropriate calibers. Historically, threaded barrels were initially more prevalent on military and competition firearms, but are now increasingly common on commercially available handguns and rifles intended for sporting, recreational, and self-defense purposes.