The Glock 43X MOS is a 9mm subcompact pistol with a 3.41-inch Zaffiri Precision Gold compensated barrel and a 10-round capacity. The slide has a custom Black and Yellow Cerakote finish and the MOS cut makes it optic ready out of the box. 
 

Key Specifications 

• Brand: Glock 
• Model: 43X MOS 
• Caliber: 9mm 
• Action: Semi Auto 
• Capacity: 10+1 
• Barrel Length: 3.41" 
• Color/Finish: Black/Yellow Cerakote 
   

Detailed Features 

• 3.41-inch Zaffiri Precision Gold compensated barrel 
• Custom Black and Yellow Cerakote finish on slide 
• MOS (Modular Optic System) cut for direct optic mounting 
• Subcompact form factor 
• Iron sights included

Owners of the 43X MOS with the Zaffiri compensated barrel tend to be happy with the muzzle control it provides on such a compact platform. The Black and Yellow Cerakote finish is a polarizing choice, and opinions split clearly between those who sought it out specifically and those who would have preferred a more subdued look.

The 43X platform in general gets good marks for its grip length relative to overall size, making it feel more controllable than some similar-sized guns. The MOS optic cut is appreciated by those who want a red dot, though a few owners note the selection of directly compatible optics requires checking the MOS mounting pattern before buying.

The 10-round capacity is the most common complaint in reviews of this variant, particularly for buyers in states where standard-capacity magazines are legal. The compensated barrel goes some way toward compensating for the tradeoff in capacity, and most owners who chose this configuration prioritized the carry package over round count.