Quote Originally Posted by jcustis View Post
Would you use functioning interchangeably with durability? If so, I'd agree. One of the appealing characteristics of the piston is the reduction of carbon fouling finding its way into the chamber.

There are also continual improvements in bolt carrier groups, chambers, magazines, trigger packs, and even charging handles with specific geometries to reduce failure, and even improve ambidextrous usage.
Yes I would but have to agree that's a big stretch of the dictionary definition.