The Heckler & Koch HK45 V1 is a DA/SA semi-automatic .45 ACP pistol with a 4.46-inch polygonal rifled, cold hammer-forged barrel. It pairs a Flat Dark Earth Cerakote serrated steel slide with a Flat Dark Earth polymer frame and a Picatinny rail, and carries a 10+1 capacity with two included magazines. Front night sights and ambidextrous controls round out the package. 
 

Key Specifications 

• Brand: Heckler & Koch 
• Model: HK45 V1 
• Caliber: .45 ACP 
• Action: Semi Auto (DA/SA) 
• Capacity: 10+1 
• Barrel Length: 4.46" 
• Weight: 31.20 oz 
• Frame Material: Polymer 
• Slide Material: Steel 
• Finish: Flat Dark Earth Cerakote 
   

Detailed Features 

• 4.46-inch polygonal rifled, cold hammer-forged barrel 
• Serrated Flat Dark Earth Cerakote slide over a black polymer frame 
• Front night sight for low-light target acquisition 
• Ambidextrous safety lever gives left- and right-handed shooters the same controls 
• Picatinny rail on the frame for a light or laser 
• Ships with two magazines

HK45 owners frequently point to build quality as the platform's strength: parts fit is tight and the DA/SA action is smooth, though the double-action first-shot pull is noticeably heavier than the single-action shots that follow, which takes some practice to master. Reliability comments are largely positive across owners running varied ammunition.

Ergonomically, reviewers like the ambidextrous safety placement for both left- and right-handed shooters, and the night sights are appreciated for duty or home-defense use. Some owners feel the grip is thicker than comparable .45 ACP pistols, which affects concealment for smaller hands.

On value, the HK45 V1 draws mixed opinions: fans consider it a premium option worth the price for HK's engineering, while others feel the cost sits above many polymer .45 ACP competitors and that aftermarket holster and accessory support is smaller than for more common platforms.