Don't put your trust in a regular magazine, get the 15 round magazine for the 509C offered by GrabAGun. When you practice with small handguns, you want this magazine to enhance your most reliable handgun. With its rounds of 9mm Luger, you will see a definite improvement to your shots at the range.
WARNING: WARNING: Cancer and Reproductive Harm - www.p65Warnings.ca.gov
safety:PROP 65 WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.