The Glock 23 Gen5 is a compact striker-fired pistol chambered in .40 S&W. It holds 13+1 rounds with a 4.02-inch barrel and weighs 1.8 lbs (34.36 oz). The frame is polymer with a Picatinny rail, and the finish is black nDLC steel. 
 

Key Specifications 

• Brand: Glock 
• Model: G23 Gen5 
• Caliber: .40 S&W 
• Action: Striker-fired (DAO) 
• Capacity: 13 rounds (+1) 
• Barrel Length: 4.02 inches 
• Weight: 1.8 lbs (34.36 oz) 
• Finish: Black nDLC Steel 
• Frame Material: Polymer with Picatinny rail 
   

Features 

• Safe Action System with three independent safeties 
• Glock Marksman Barrel (GMB) for improved accuracy and reduced muzzle rise 
• Interchangeable backstraps to fit different hand sizes 
• Flared magwell for faster magazine changes 
• Front slide serrations for better grip when manipulating under pressure 
   
  The Gen5 updates make a real difference over earlier generations. The flared magwell and front serrations are practical additions, and the GMB barrel shoots noticeably tighter groups than the older rifling pattern. The .40 S&W chambering gives the G23 more stopping power than a 9mm compact at the cost of some capacity and felt recoil.

Glock G23 Gen5 owners are generally satisfied, with reliability being the most consistent theme. Malfunctions are rarely mentioned. The pistol runs across a wide range of conditions and ammunition without much complaint.

Ergonomics get positive marks overall, though grip fit is personal and some shooters with larger or smaller hands find the Gen5 backstrap options helpful. Accuracy draws consistent praise, with owners reporting it shoots well at typical defensive and range distances.

The .40 S&W caliber is where the community divides. Plenty of owners specifically chose it for the balance of stopping power and manageable recoil. Others note that 9mm offers comparable performance with less recoil and higher capacity in the same frame. The .40 debate is an ongoing one.

Size-wise the G23 works well for concealed carry, though some shooters feel it is slightly thicker than they prefer. The Glock platform's large accessory market is seen as an advantage, with wide availability of sights, triggers, and holsters.

Pricing is considered fair relative to build quality and performance, though budget-conscious buyers occasionally look at other options in the compact category.