I had an itch for a 5.7 a few years back. The only thing was it is kind of a boutique round. Expensive and sometimes not available.
Anyhoo, I went a different route. Picked up a 6" KKM barrel in 357 Sig for my Glock 22. Then picked up some Underwood 65gr Extreme Defenders. This has more recoil than the 5.7, but it's not a hard kicker. Then I can swap barrels back to the more practical 40 or 9mm so the pistol is very versatile.
