Today, we’re breaking down one of the most talked-about concealed carry pistols on the market: the Glock 43X MOS — a slim, lightweight 9mm that’s winning a lot of hearts.

Main Themes:
Concealability Meets Capacity.
The 43X MOS hits that sweet spot between slim profile and enough firepower.
It’s thin, lightweight, incredibly easy to conceal — but still packs 10+1 rounds out of the box.
As one reviewer put it: "the gun you have on you is the one that’s going to save your life."
And this one? You’ll actually carry it.

MOS System — Game Changer for Optics.
This model comes ready to direct-mount a micro red dot — no bulky plates, no huge gaps.
Perfect for today’s carry trends, where red dots are becoming standard issue for self-defense and even competitive shooting.

Capacity Boost — Shield Arms S15 Mags.
Now here’s where things really heat up:
Swap the factory mags for Shield Arms S15s, and you’re rocking 15+1 capacity — same as a Glock 19, but in a way thinner, lighter package.
“It’s a game changer,” one reviewer said — and honestly, it is.

Ergonomics and Handling.
The 43X MOS’s slightly longer grip means even larger hands get a full, confident purchase.
Shooting it feels natural — though some folks add aftermarket grip tape for extra texture.

Trigger — Good Enough, but Not Great.
It’s a Glock trigger: "spongy but reliable."
Nothing fancy — it goes bang when you need it to.
If you want something crisper, there’s no shortage of aftermarket upgrades out there.

Aftermarket Support and Holster Fit.
Speaking of upgrades — the aftermarket is catching up fast.
You'll need a specific holster if you’re running an optic and rail attachments, but good options are out there, especially as demand for the 43X MOS keeps growing.

Comparison to Other Pistols.

• Thinner than a Glock 19, but can match its capacity (with S15 mags).

• Compared to the P365 and Hellcat, it offers a more traditional Glock feel with modern carry features.

• Many Glock 19 loyalists are admitting: “It’s hard to go back after carrying the 43X MOS.”

Reliability — Glock’s Ace in the Hole.
It’s a Glock — built to work.
As one source said: "They’re shovels, and they just work."
You can count on the 43X MOS to be there when you need it.

Quick Specs Recap:

• Barrel: ~3.4 inches

• Capacity: 10+1 (factory), 15+1 (S15 mags)

• Weight: ~16-18 ounces unloaded

• Overall Length: ~6.5 inches

• Width: ~1.1 inches

• Caliber: 9mm

• MOS: Direct mount for RMSc footprint optics

Caveats:

• Shield Arms S15 mags need a metal mag release for best reliability.

• Holster options might be limited at first if you’re running optics and lights.

• Stock trigger is just okay — but easy to upgrade if needed.

Bottom Line:
If you want maximum concealability, solid firepower, and optics capability — all backed by Glock reliability — the 43X MOS is hard to beat.
It’s absolutely one of the best EDC setups out there right now — slim, smart, and seriously capable.