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.

MANUFACTURER: Heckler and Koch (HK USA)
FAMILY: HK45 Series
MODEL: HK45 (V1)
TYPE: Semi-Auto Pistol
ACTION: Double / Single Action
CALIBER/GAUGE: 45 ACP
FINISH: Blue
FRAME: Polymer Frame
BARREL: 4.46″
OVERALL LENGTH: 8.03″
CAPACITY: 10 + 1
# OF MAGAZINES: 2
MAG DESCRIPTION: 10 rd.
SIGHTS: Fixed
SIGHT TYPE: Fixed Sights
WEIGHT: 31.2 oz
SHIPPING WEIGHT: 3.6 lbs.
SAFETY FEATURES: Safety/Decocking Lever
ADDL INFO: Ambidexterous Mag Release
ADDL INFO: Integral Rail
MFG MODEL NO: 81000026
UPC: 642230261273