The Glock G45 Gen5 is a 9mm pistol built on a compact frame with a full-size slide. It holds 17+1 rounds, has a 4.02-inch barrel, measures 7.28 inches overall, and weighs 24.52 oz. The finish is black nDLC. Three magazines ship with the gun. 
 

Key Specifications 

• Model: G45 Gen5 
• Caliber: 9mm Luger (9x19 Para) 
• Action: Safe Action (Double Action Only) 
• Capacity: 17+1 rounds 
• Barrel Length: 4.02 inches 
• Overall Length: 7.28 inches 
• Weight: 24.52 oz (1.53 lbs) 
• Finish: Black nDLC 
• Grip Type: Black Rough Texture, Interchangeable Backstraps 
• Sights: Fixed Glock Sights 
• Magazines Included: 3 
   

Features 

The Safe Action system has three automatic safeties (trigger safety, firing pin safety, and drop safety), that disengage in sequence during the trigger pull and re-engage when the trigger is released. No external safety lever to manipulate. The nDLC (Diamond-Like Carbon) finish on the slide resists scratches and corrosion better than standard Parkerized finishes. The rough-texture grip holds well in wet hands, and the interchangeable backstraps let you size the grip without aftermarket parts. 
 
The G45 combines the compact Gen5 frame (shorter grip than the G17) with the full G17 slide and barrel length, which gives you the accuracy of the longer slide with slightly better concealability than the full G17.

The Glock G45 Gen5 draws familiar Glock owner feedback: reliability above all else, with a balance of size and capacity that fits both carry and duty use.

Capacity at 17+1 in a 9mm that carries and shoots comfortably is cited often as the main reason buyers chose the G45 over compact alternatives. The nDLC finish gets positive marks for durability and looks better longer than earlier Glock finishes.

Reliability is the universal headline. Most G45 owners report zero malfunctions across high round counts, consistent with Glock's track record. Accuracy gets strong reviews; the 4.02-inch barrel helps, and the fixed sights are usable.

The rough-texture grip divides some opinion. Many owners find it helps in adverse conditions; a smaller group finds it abrasive for extended bare-hand sessions at the range. Interchangeable backstraps are mentioned positively by shooters who need to fit the grip.

On the negative side, some users prefer ambidextrous controls out of the box and note that left-handed manipulation requires aftermarket parts. Others note the factory sights are functional but not the end destination for many buyers who will eventually upgrade to tritium or fiber optic sights.