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.
Along with the HK45 Compact, the HK45 was developed as a possible
candidate for the Joint Combat Pistol (JCP) and Combat Pistol (CP)
programs administered by the U.S. military in their search for a new
service handgun to replace the 9-millimeter M9. These programs were
suspended before completion and no pistols were selected.
The HK45 uses an HK proprietary O-ring barrel for precise
barrel-to-slide lockup and optimal accuracy. HK45 barrels are made using
the famous HK cold-hammer forging process for superior performance.
Using HK’s unique internal mechanical recoil reduction system reduces
the recoil forces imparted to the weapon and shooter by as much as 30%,
improving shooter control during rapid firing and increasing component
service life. Capable of firing standard .45 ACP ball through +P
ammunition, the HK45 combines the accuracy, modularity, reliability and
minimum 20,000 round service life of the famed USP45 series with the
improved ergonomics of the P2000 series pistols. HK45 models can be also
be fitted with threaded barrels for use with muzzle mounted sound
suppressors.