Maximize your Glock's carry potential with the Shield Arms® Z9 9mm 9-Round Magazine Kit for Glock 43 Pistols with Mag Release. This ultrareliable upgrade kit for Glock pistols includes a proprietary 9-round extended-capacity magazine, engineered to deliver a precise fit for smooth operation and snag-free carry, while simultaneously increasing your carry capacity for maximum firepower. Ambidextrous magazine catch cutouts on both sides of the magazine work with right- or left-handed mag catches.