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.
HK Magazine HK45 Compact 45 ACP 10-Round Steel Blue
Glock Magazine Gen 4 Glock 17, 19, 26, 34 9mm Luger 33-Round...
Trijicon HD Night Sight Set HK 45C, P30, VP9 Steel Matte 3-Dot...
$139.00 & SHIPS FREEList Price: $163.00 Save up to $24.00 (15%)
Sig Sauer Magazine Sig Sauer P238 380 ACP Stainless Steel
HK Magazine HK P30, VP9 9mm Luger Steel Blue
Streamlight TLR-3 Weaponlight LED with 1 CR123A Battery fits...
Starline Reloading Brass 9mm Luger
$17.29 - $167.99
Starline Reloading Brass 45 ACP
$21.99 - $202.99
HK Magazine HK45C, USP Compact 45 ACP 8-Round Steel Blue