The Ultimate CCW: G43, G43X & G43X MOS
The Glock 43 family represents the pinnacle of Glock’s engineering for concealed carry. From the ultra-discreet profile of the original G43 to the 10+1 capacity of the G43X and the optics-ready G43X MOS, these 9mm pistols provide the perfect balance of shootability and concealability.
Glock’s Slimline 9mm series has redefined the concealed carry market. The original Glock 43 remains a favorite for "deep concealment," offering a subcompact profile that disappears in a pocket or ankle holster. For those who want more control and capacity, the Glock 43X steps up with a 10+1 round magazine and a fuller grip that fits most hands perfectly.
If you want the most modern configuration, the Glock 43X MOS is the top choice. It features a factory-milled slide for micro red dots and a dedicated accessory rail for tactical lights—giving you full-size capability in a slim, carry-friendly width. Explore our selection of new and certified used Glock Slimline pistols to find your perfect EDC.
*Note: The G43X MOS is specifically engineered to support micro-optics and compact tactical lights.
Q: What is the difference between a Glock 43X and a Glock 43X MOS?
The G43X MOS features a factory-milled slide for mounting micro red dot optics and a slim accessory rail for tactical lights. The standard G43X has a smooth dust cover (no rail) and a standard slide designed for iron sights only.
Q: Can the Glock 43 use Glock 43X magazines?
No. The Glock 43 is a true single-stack pistol. The G43X utilizes a slightly wider "Slimline" magazine to accommodate 10 rounds. Because of this width difference, the magazines are not interchangeable.
Q: Which optics fit the Glock 43X MOS without an adapter plate?
The G43X MOS uses the Shield RMSc footprint. Micro red dots like the Shield RMSc, Sig Sauer RomeoZero, and the Holosun 407K/507K (which may require a thin shim or minor lug modification) are designed to fit this specific slide cut.
Q: Is the original Glock 43 still good for concealed carry?
Absolutely. While it has a lower capacity than the 43X, the Glock 43 is shorter in the grip, making it significantly easier to hide in "deep concealment" scenarios, pocket holsters, or ankle rigs.