The Glock 41 Gen 4 MOS is a full-size semi-automatic pistol in .45 ACP with a 5.31-inch barrel, 10+1 round capacity, and the Modular Optics System cut into the slide. At 36.16 oz and 8.78 inches overall with a black finish, it sits firmly in the competition and range category rather than carry. 
 

Key Specifications 

• Brand: Glock 
• Model Name: G41 MOS 
• Caliber: .45 ACP 
• Action Type: Double Action Only (DAO) 
• Capacity: 10+1 rounds 
• Barrel Length: 5.31 inches 
• Overall Length: 8.78 inches 
• Weight: 36.16 oz (approximately 2.26 lbs) 
• Finish Color: Black 
   

Features 

The MOS system allows direct attachment of compatible red dot optics to the slide without proprietary adapter plates. The rough-texture grip with finger grooves gives a firm hold during extended sessions. The cold hammer-forged barrel provides consistent accuracy and long service life. The Glock Safe Action system has three integrated safeties: trigger, firing pin, and drop. Adjustable sights are included. 
 
At 36.16 oz., the weight helps absorb .45 ACP recoil during sustained shooting strings, which is a real advantage in competition contexts where fatigue adds up.

The Glock 41 Gen 4 MOS draws consistent praise from competitive shooters for the accuracy that the 5.31-inch barrel enables and for the MOS optics capability.

The MOS system is the most discussed feature. Owners who have added red dot sights report faster target acquisition and describe it as a worthwhile modification. The grip design handles well for larger hands and aids recoil control during extended strings of fire.

The .45 ACP caliber generates the usual split opinions. Many owners value the stopping power and physical feel of the larger cartridge, while others note the recoil increase over 9mm becomes noticeable in long competition sessions with multiple fast strings.

Physical size is polarizing. The full-size frame suits larger-handed shooters well but is an acknowledged poor fit for those who prefer compact pistols or have smaller hands.

Glock reliability is a consistent positive: owners report trouble-free cycling across ammunition types. The wide aftermarket ecosystem for Glock gives the 41 broad support for accessories and replacement parts, though some competitors argue other competition pistols at this price point offer more refined out-of-box features.