The HK45 is a German pistol developed in the 2000s by Heckler & Koch. The pistol was designed to meet the requirements for the U.S. Joint Combat Pistol weapon program. FirearmCentral Wiki The HK45 is a .45 ACP pistol derived from the H&K USP, the P2000, and the ill-fated HK1911 program and was Heckler & Koch's entry into the U.S. military's Joint Combat Pistol program to replace the Beretta M9 pistol in service, although the program was "suspended indefinitely" in 2006 and no winner was chosen. 
TOKYO MARUI HK45 TACTICAL GBB Pistol MPN HK45 TAC 188 00 IceFoxes
The Heckler & Koch HK45 (Heckler & Koch, .45 ACP) is a semi-automatic pistol designed by the German arms manufacturer Heckler & Koch. A badly weathered HK45 was Eli's main sidearm in The Book of Eli. The HK45 was designed to meet requirements set forth in the U.S. Military Joint Combat Pistol program which had the purpose of arming the U.S. Military with a .45 ACP semi-automatic pistol instead. The HK45 was designed to meet requirements set forth in the U.S. Military Joint Combat Pistol program [1] which had the purpose of arming the U.S. Military with a .45 ACP semi-automatic pistol instead of the 9mm M9 pistol.
The HK45 represents an evolutionary advancement of the USP Compact chambered in .45 ACP and shares the operating principles and many internal parts of that weapon. Significant effort went towards making it more ergonomic than the HK USP Compact. The HK45 was designed to meet requirements set forth in the U.S. Military Joint Combat Pistol program which had the purpose of arming the U.S. Military with a .45 ACP semi-automatic pistol instead of the 9mm M9 pistol. 
Heckler Koch HK45 Pistol
15 rounds (9x19mm Parabellum) 13 rounds (.40 S&W and .357 SIG) 12 rounds (.45 ACP) Sights. Patridge, "3-dot" type [2] The USP ( Universelle Selbstladepistole or "universal self-loading pistol") is a semi-automatic pistol developed in Germany by Heckler & Koch GmbH (H&K) as a replacement for the P7 series of handguns. The HK 45 is the big-bore evolution of the military-grade HK USP pistol. It's 10+1 round medium-capacity configuration bridges the gap between lower-capacity single-stack 45 caliber pistols and higher capacity 45s that are just plain fat and unwieldy.
The Heckler & Koch HK45 (Heckler & Koch, .45 ACP) is a German-made semi-automatic pistol chambered for the .45 ACP cartridge. The HK45 was designed to meet requirements set forth in the U.S. Military Joint Combat Pistol program which had the purpose of arming the U.S. Military with a .45 ACP semi-automatic pistol instead of the 9mm M9 pistol. The Joint Combat Pistol program was suspended. H&K HK45 は、 ドイツ の 銃器 メーカーである ヘッケラー&コッホ 社（Heckler & Koch GmbH, H&Kとも）が 2006年 に開発した 自動拳銃 である。 概要 元々は 2005年 に アメリカ軍 の SOCOM （合衆国特殊戦統合軍）で行われた ベレッタM9 の後継 拳銃 のトライアルに出品するため、 H&K USP の後継版である H&K P30 をベースとしてトライアル条件に合致するよう、 .45ACP弾 を装備したモデルである。 
Heckler Koch HK45 Wikipedia
The HK45 was designed with significant input from two Army special operations veterans, Larry Vickers (Delta Force) and Ken Hackathorn (Special Forces). The pistol was a chimera, a blending of. The HK45 represents an evolutionary advancement of the Heckler & Koch USP. It is available in the same ten variants as the USP. The HK45 is a full size model pistol, but significant effort went towards making it more ergonomic than the HK USP full-size chambered in .45 ACP by incorporating features found on the Heckler & Koch P30.
The HK45 was developed as a product improvement of the highly regarded USP45, first released in the 1995. The Caliber .45 ACP HK45 includes several user-inspired enhancements including changeable grip panels (backstraps), a Picatinny MIL-STD-1913 accessory rail, better ergonomics, and more ambidextrous controls. The HK UMP45 (German: Universale Maschinenpistole 45 | English: Universal Submachine Gun 45) is a German submachine gun developed by Heckler & Koch in the 1990s. The UMP can fit MIL-STD-1913 Picatinny Rails to allow for attachments. Variants HK UMP 45 Production model chambered in .45 ACP. HK UMP 40 Production model chambered in .40 S&W. HK UMP 9 
HK45 Tactical Model New for 2013
The Heckler & Koch HK45 Compact, is a compact pistol designed by German firearms company Heckler & Koch in the early 2000s. It fires the large .45 ACP cartridge and can utilize 8 to 10 round magazines. It features an ergonomic design and has many more tactical options compared to earlier HK models. The HK45CT (Compact Tactical) variant includes a threaded barrel for use with barrel.
