Best Ammo for the Glock 43 / 43X (Micro 9mm Carry)
May 21, 2026 · AmmoBin.com
The Glock 43 and 43X are popular micro-compact 9mm carry guns. Short barrels and lighter slides make ammo selection — and testing — especially important.
Carry: short-barrel-friendly JHP
Choose a quality defensive JHP that's tested to expand reliably from a short (~3.4 inch) barrel — some loads are tuned for compact pistols. 124gr and 147gr are common picks. Always run 100–200 rounds through your specific gun first.
Practice: manage the recoil
Micro 9s recoil more than full-size guns. Practice with standard FMJ in your carry weight; some shooters find 147gr subsonic a bit softer. See 9mm grain weights on weights.
See best 9mm self-defense ammo for defensive-load selection and compare live 9mm prices.
Frequently asked questions
What is the best carry ammo for a Glock 43?
A quality 9mm JHP that expands reliably from a short barrel (124gr or 147gr are common), confirmed with a 100–200 round reliability test in your gun.
Does ammo matter more in a micro 9mm?
Yes — short barrels and light slides make reliability and short-barrel expansion more load-dependent, so testing your carry ammo is essential.
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