The Glock G45 is a 9mm Luger striker-fired pistol built on a compact frame with a full-size grip. The 4.02-inch Marksman barrel gives it more sight radius than a standard compact Glock, and the 17-round magazine capacity matches the G17. The matte black finish weighs in at 1.9 lbs loaded. 
 

Key Specifications 

• Model: G45 
• Caliber: 9MM LUGER (9X19 PARA) 
• Action: Striker-fired 
• Capacity: 17 rounds 
• Barrel Length: 4.02 inches 
• Weight: 1.9 lbs. 
• Finish: Matte Black 
   

Features 

The Safe Action trigger system combines trigger, firing pin, and drop safeties, so the pistol won't fire without deliberate trigger press. The Marksman barrel has tighter tolerances than previous Glock barrels, which contributes to the accuracy improvement Gen 5 owners typically report over older generations. 
 
The ambidextrous slide stop and flared mag well are practical additions for left-handed shooters and faster reloads under any circumstances. Front serrations on the slide help with press-checks and slide manipulation. The G45 uses standard G19/G17 magazines, so sourcing spares is not a problem.

The Glock G45 Gen 5 gets broadly positive reviews across experience levels, with a few consistent themes.

Ergonomics come up first for most owners: the full-size grip with a compact slide gives the pistol a more natural feel than a standard G19 for shooters with larger hands, while the overall dimensions stay manageable for carry. Accuracy improvements from the Marksman barrel are noted often, with Gen 4-to-Gen 5 comparisons landing in the G45's favor.

Capacity and size balance draw regular praise. At 17 rounds in a package this size, it handles duty or home-defense roles without forcing a compromise. Reliability is a given in most Glock discussions, and the G45 doesn't draw much criticism on that front.

The areas that generate debate are aesthetics, price relative to competing 9mm pistols, and the learning curve on the Glock trigger for first-time owners. The wide aftermarket for Glock platforms is consistently listed as an advantage for buyers who want to customize sights, triggers, or controls.