Description
The GLOCK 43X 9mm 10RD MOS FS BNY is a sub-compact, striker-fired pistol that pairs a slimline profile with a pre-milled MOS slide for micro-optics and a rail for lights or lasers. It ships with a 10-round magazine and the familiar GLOCK ergonomics, purpose-built for everyday concealed carry.
| Manufacturer | GLOCK |
|---|---|
| Model | 43X MOS |
| Material | Polymer frame, steel slide (per manufacturer specs) |
| Compatibility | GLOCK Slimline holsters, MOS micro-optics (Shield RMSc, Holosun K, etc.) |
| Finish | Black nDLC (BNY) |
| Weight | 18.5 oz unloaded (per manufacturer specs) |
| Condition | New |
Key Features
- MOS Slide – Pre-cut mounting points for micro-optics, so you skip the milling and mount a red dot in minutes.
- GLOCK Slim Mounting Rail – Attach a compact light or laser without adapters, giving you low-light capability on a slim frame.
- 10-Round Magazine – Standard GLOCK magazine size for this model; aftermarket 15-round options exist from Shield Arms, but factory capacity keeps it legal in restricted states.
- Sub-Compact Footprint – 6.5-inch overall length and 1.06-inch width make it easy to conceal IWB or AIWB without printing.
- Striker-Fired Action – Consistent trigger pull every time, with no external safety to fumble under stress.
Who It’s For
The GLOCK 43X MOS is for the daily carrier who wants a slim 9mm with optics-ready convenience. It fits shooters who compare Sig P365 and GLOCK 43X and prefer a slightly wider grip for better control, or those upgrading from a standard G43 who need a rail and optic cut. It also works as a backup duty gun for plainclothes officers.
Pros / Cons
- Pro: Optics-ready out of the box—no gunsmith needed.
- Pro: Slim profile (1.06 in.) hides under a T-shirt.
- Pro: GLOCK aftermarket is massive; holsters, mags, and parts are everywhere.
- Con: Factory 10-round mags limit capacity compared to the largest GLOCK 9mm magazine (33-round sticks), but aftermarket baseplates exist.
- Con: The rail is proprietary—only GLOCK Slimline lights fit without a custom adapter.
Comparison: GLOCK 43X MOS vs. Sig Sauer P365XL vs. Zev Technologies OZ9 Hypercomp
| Feature | GLOCK 43X MOS | Sig Sauer P365XL | Zev Technologies OZ9 Hypercomp |
|---|---|---|---|
| Caliber | 9mm | 9mm | 9mm |
| Capacity (factory) | 10+1 | 12+1 | 17+1 |
| Barrel Length | 3.41 in. | 3.7 in. | 4.5 in. |
| Weight (unloaded) | 18.5 oz | 20.9 oz | 26 oz |
| Optics Ready | Yes (MOS) | Yes (RMSc footprint) | Yes (RMR/Holosun) |
| Price | $807.87 | $699 (street) | $1,899 (street) |
| Best For | Budget-conscious optics-ready carry | Higher capacity in a slim frame | Competition or premium build |
FAQ
What is GLOCK 43X MOS?
MOS stands for Modular Optic System. The GLOCK 43X MOS has a slide milled at the factory to accept micro red-dot sights without adapter plates. It also includes the GLOCK Slim Mounting Rail for attaching lights or lasers.
What are the GLOCK 43X MOS dimensions?
Overall length is 6.5 inches, height is 5.04 inches, width is 1.06 inches, and barrel length is 3.41 inches. Unloaded weight is 18.5 ounces.
How does it compare to the Sig P365?
When you compare Sig P365 and GLOCK 43X, the P365 is slightly narrower (1.0 in.) and holds 10+1 flush, while the 43X has a thicker grip that some shooters find more controllable. The 43X MOS adds an optic cut and rail; the standard P365 lacks both unless you buy the XL version.
What is the standard GLOCK magazine size for this model?
The standard GLOCK magazine size for the 43X MOS is 10 rounds. Aftermarket options from Shield Arms offer 15-round flush-fit magazines, but they require swapping the magazine catch.
What is the largest GLOCK 9mm magazine I can use?
The largest GLOCK 9mm magazine is the factory 33-round stick. It fits the 43X MOS, but it extends well past the grip and is best for range use or as a backup in a bag.
Ready to Carry?
The GLOCK 43X 9mm 10RD MOS FS BNY gives you a proven slimline platform with modern optics and rail options—no guesswork, no gunsmithing. Order yours today and get it in 1–2 business days.
- ✅ Nationwide delivery (all 50 states)
- ✅ Ships 1-2 business days
- ✅ 30-day returns
- ✅ Secure checkout
Explore more: Semi Auto Handguns | Concealed Carry | Pistol Optics
Last updated: April 2026
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