Keeping a few extra factory magazines around is never a bad idea; extra magazines save loading time at the range and also serve as a backup for those days when you simply cannot remember where you put your primary magazine.
Kahr Magazine Kahr CM40, CW40, K40, MK40, P40, PM40, T40, TP40 40 S&W 7-Round Stainless Steel
Maglula UpLULA Pistol Magazine Loader and Unloader Polymer
Hornady Critical Defense Ammunition 40 S&W 165 Grain Flex Tip...
Sale$19.29Save $2.20 (10%)
Caldwell Orange Peel Target 12"x18" Self-Adhesive Silhouette
$9.99 - $119.99Save up to $60.00 (33%)