The 40C is incredible. You can get the .357 SIG barrel and have true 125g .357 Magnum power.

You can buy a 9mm barrel and shoot cheaper 9mm. Beware a few extraction problems may occur. Best used for practice only as extractor vs brass size may cause FTEs. I have had two in 300 rds.

I did a comparison test at 7 and 15 yards between a Performance Center 9mm ported Shield a standard 9mm Shield and the new .45 Shield. I could not believe the results. Highest scores were with the .45 and the worst with the ported Performance Center 9mm!
I had to add the 45 Shield to the stable.

Better carry gun. The 40c is a house/car w green laser gun.