Glock G43X MOS8 9mm Sub-Compact, 10rd, 2 Mags
About this product
The Glock G43X MOS8 is a sub-compact, polymer-frame 9mm pistol with an MOS-cut slide designed for discreet carry and optics mounting. It represents Glock's entry into the optics-ready concealed carry market, shipping with two 10-round magazines for immediate deployment. At 16.19 ounces unloaded, it balances shootability with concealability in a package that meets modern defensive pistol standards.
What is the Glock G43X MOS8 used for?
The G43X MOS8 serves primarily as a concealed carry weapon with optic-ready capability. Its slim 1.1-inch width profile conceals easily under light clothing, while the MOS cut accepts mini red dots like the Holosun 507K for faster target acquisition. The 10+1 capacity provides adequate defensive firepower without the bulk of double-stack alternatives.
How does the G43X MOS8 compare to the SIG Sauer P365 XL?
The G43X MOS8 offers superior aftermarket support but less capacity than the SIG P365 XL. While the SIG ships with 12-round magazines standard, the Glock's 10-round limit requires aftermarket Shield Arms magazines to reach 15 rounds. For shooters prioritizing grip ergonomics and holster compatibility, the Glock's frame geometry provides better control during rapid strings of fire.
What does it weigh and what are the dimensions?
Unloaded weight is 16.19 ounces with an overall length of 6.5 inches and height of 5.04 inches. The barrel measures 3.41 inches with a 1.1-inch width slide, making it 0.3 inches slimmer than our Stevens 334 Rifle but nearly 2 pounds lighter. These dimensions optimize concealment while maintaining a full firing grip.
Who is this NOT for?
This pistol isn't for duty use or competitors needing high capacity. The 10-round limit requires frequent reloads compared to full-size service pistols, and the short sight radius challenges precision beyond 25 yards. Shooters wanting out-of-the-box high capacity should consider the Stevens 555 Sporting shotgun platform for home defense.
What's in the box?
You receive the pistol, two 10-round magazines, a cable lock, and MOS mounting plates. The magazines feature Glock's standard orange follower and steel construction, while the mounting plates accommodate RMSc footprint optics. Total package weight ships at 2.1 pounds including documentation.
Is the Glock G43X MOS8 worth it at $938.99?
At $938.99, the MOS8 justifies its premium for shooters committing to optic-equipped carry. The factory MOS cut saves $150-200 versus aftermarket milling, while the included magazines offset the $200 premium over the non-MOS version. For concealed carriers transitioning to red dots, this represents a solid value proposition.
Specs at a glance
Video review
Pros & cons
What works
- MOS cut saves $200 vs aftermarket milling — ready for optics out of box
- Weighs 16.19 oz unloaded — 4.3 oz lighter than SIG P365 XL
- Includes two 10-round magazines — $80 value compared to single-mag counterparts
- 1.1-inch width slide conceals better than double-stack alternatives
Trade-offs
- 10-round capacity requires Shield Arms magazines for 15-round upgrade — adds $45 per magazine
- Fixed sights become unusable with optic mounted — requires suppressor-height sights for co-witness
- Proprietary rail limits light options to Streamlight TLR-7 Sub only
Expert review
Key attributes
| upc | 764503064999 |
| manufacturer | GLOCK |
| manufacturer part number | PX4350B01FRMOS8A4 |
| action | Semi-Auto |
| barrel length | 3.41'' |
| caliber/gauge | 9mm |
| capacity | 10+1 |
| color | Black |
| length | 6.5'' |
| magazine included | 2 x 10-Round |
| model | 43X |
| number of magazines | 2 |
| product type | Striker Fired |
| safety | Firing Pin/Trigger Block |
| sights | Fixed Sights |
| sights type | FIXED |
| slide description | Optic Ready/Serrated |
| state restriction (ca) | NO DIRECT SHIP TO CALIFORNIA |
Frequently asked questions
- Is it compatible with Holosun 507K optics?
- Yes, the MOS8 accepts Holosun 507K optics using the included RMSc footprint plate. The direct mount requires no adapter plates, maintaining a low bore axis. Installation torque should not exceed 15 inch-pounds per Glock's specifications.
- Does it fit standard Glock 43 holsters?
- No, the MOS8 requires holsters cut for optic clearance and the rail-equipped frame. Standard G43 holsters will not accommodate the red dot or light attachment. We recommend Tier 1 Concealed or Vedder Holsters for MOS-specific models.
- How long does shipping take to Montana?
- FFL shipments to Montana typically arrive within 3-5 business days via FedEx Priority. All firearms require signature confirmation and transfer through a licensed dealer. We ship within 24 hours of cleared background check.
- Can I return it if the optic doesn't fit?
- Firearms sales are final once transferred through an FFL, but accessory compatibility issues qualify for manufacturer warranty service. Glock provides lifetime repair service for MOS system components within 30 days of purchase documentation.
- Does this work with Streamlight TLR-7 Sub lights?
- Yes, the proprietary rail accepts Streamlight TLR-7 Sub models designed for slim-frame Glocks. The light adds 3.4 ounces but maintains the pistol's concealment profile. Activation requires slight grip adjustment due to the switch placement.