If you try it side by side with the 23 you will convert, simple as that. Ammo is plenty available. 5 state police agencies use the round. Problem is Glock is the only one onboard, XD's were available in GAP and they did a nicer job than Glock in that they kept the slide the same width as their .40 and 9! Glock made the slide a bit wider. I was a nay sayer, but shot it side by side and the difference was night and day. The manufacturers could save big money on tooling, I would bet if they would embrace the round, for God's sake it is the 21st century, the GAP is more size efficient.