The Glock 48 Compact MOS is a slim 9mm pistol with a 4.17-inch barrel, optics-ready slide, and the standard Glock Safe Action trigger system. At 24.97 oz loaded with its polymer frame, it sits between a subcompact and a full-size, offering a longer sight radius than most carry-sized guns without adding bulk. The MOS cut accepts a wide range of red dot sights without requiring a separate adapter plate. 
 

Key Specifications 

• Model: Glock 48 
• Caliber: 9MM Luger (9x19 Para) 
• Action: Safe Action / Striker Fired 
• Capacity: 10+1 rounds 
• Barrel Length: 4.17 inches 
• Overall Length: 7.28 inches 
• Weight: 24.97 oz (1.57 lbs) 
• Frame Material: Polymer 
• Finish Color: Matte Black 
   

Detailed Features 

The polymer frame is lightweight and durable. The slim grip profile is one of the G48's practical advantages for concealed carry. The single-stack-style layout keeps the overall width narrow despite the 10+1 capacity. 
 
The 4.17-inch barrel delivers good ballistic performance and a longer sight radius than a 3.4-inch subcompact. The Modular Optics System (MOS) cut is integrated into the slide, allowing direct red dot mounting without height adapters. 
 
Glock's three automatic safeties (trigger safety, firing pin safety, and drop safety) are all present and operate as on any Gen 4/5 Glock. 
 

Usage Scenarios 

1. Concealed Carry: Slim enough for IWB carry, with enough barrel length to extract more performance from the 9mm cartridge. 
2. Range Use: The longer barrel and optics capability make it a capable target pistol. 
3. Home Defense: Reliable operation and 10+1 capacity make it a solid bedside option.

The Glock 48 MOS gets consistently positive feedback for its slim profile and optics-ready configuration. The combination of a longer barrel with a narrow frame is the feature most often cited as the reason to choose it over a G43 or G19.

The MOS optics cut is well-received. Owners appreciate being able to mount a red dot directly without adapters, and the variety of compatible sights is noted as a real advantage. Build quality and reliability get the usual Glock praise. Most owners report zero meaningful malfunctions across thousands of rounds.

The matte black finish is generally liked for its wear resistance rather than aesthetics.

Capacity is the most common criticism. The standard 10-round magazine is lower than some competitors in the same size class. Some users feel the grip texture could be more aggressive for better wet-condition control. These are minor complaints overall. The gun's reception is largely positive.

One of the very few guns that are comfortable to carry daily in a 12 o'clock position when you are a guy in their 40s with a dad body. Fits nicely in large hands, too.