The Shield Arms Z9 is a 9-round steel magazine for the Glock 43 — same external length as the OEM 6-round magazine with a pinky extension, but holding three additional rounds in the same on-belt footprint. The steel body keeps wall thickness thin compared to polymer, which is how Shield Arms gets the extra capacity without growing the magazine.

Specs:

• Caliber: 9mm
• Capacity: 9 rounds
• Body: steel with Powercron cationic epoxy coating (corrosion-resistant)
• Compatible: Glock 43 (NOT 43X — see Shield Arms S15 for 43X)
• Drop-free with the OEM magazine release; pairs cleanly with extended releases

Break-in: Steel mags benefit from a few load/unload cycles at full capacity to settle the spring. Load to nine, leave overnight, then run a magazine of full-power 124gr through the gun to confirm last-round bolt lock and clean ejection. If you sweat heavily or carry in a humid environment, wipe the body with a light coat of CLP every couple weeks — the Powercron finish handles it, but bare contact points appreciate it.

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