Q. What is the difference between cut rifling, broached rifling and button rifling, and which is the best? A. The basic methods of rifling a barrel are known as cut, broached, button and hammer ...

There are five barrel-rifling methods in general use: cut, button, broach, hammer forging and ECM (electrolytic cationic machining). All have their benefits.

Machines and production cells perform deep drilling, reaming, and rifling for as many as 20,000 small-caliber firearm barrels per month – efficiently.