Interesting observation. There's no doubt the Wildcat is a better engineered moderator in terms of materials and build quality, but in the years I've been using SAK moderators I've never once had any problems arising from concentricity tolerances. No baffle or end cap strikes, no visual concerns in terms of alignment and no problems where the moderator has worked loose. At roughly 4x the cost of a SAK it's hard to justify buying a Wildcat when the core function of sound suppression is so similar.