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HK45 caliber principle of operation
9 mm x 19
.40 S&W
.45 AUTO
Recoil operated weapon with modified Browning locking system and recoil buffer system
Dimensions 9 mm x 19 .40 S&W .45 AUTO
Overall length 6.81 in. 6.81 in. 7.09 in.
Overall height 5.00 in. 5.00 in. 5.06 in.
Overall width 1.14 in. 1.14 in. 1.14 in.
Barrel length 3.58 in. 3.58 in. 3.80 in.
Sight radius 5.35 in. 5.35 in. 5.83 in.
Weight      
Without magazine 1.47 lb 1.47 lb 1.60 lb
With empty magazine 1.60 lb 1.71 lb 1.76 lb
Other Specifications      
Magazine capacity 13 Cartridges 12 Cartridges 8 Cartridges
Trigger System SA/DA, DAO SA/DA, DAO SA/DA, DAO
Trigger Pull 20 N (SA)
51 N (DA)
20 N (SA)
51 N (DA)
20 N (SA)
51 N (DA)
Sights Fixed Fixed Fixed
Dimensions 9 mm x 19 .40 S&W .45 AUTO
Overall length 173 mm 173 mm 179 mm
Overall height 127 mm 127 mm 128 mm
Overall width 34 mm 34 mm 34 mm
Barrel length 91 mm 91 mm 91 mm
Sight radius 135 mm 135 mm 142 mm
Weight      
Without magazine 645 g 695 g 715 g
With empty magazine 727 g 777 g 802 g
Other Specifications      
Magazine capacity 13 Cartridges 12 Cartridges 8 Cartridges
Trigger System SA/DA, DAO SA/DA, DAO SA/DA, DAO
Trigger Pull 20 N (SA)
51 N (DA)
20 N (SA)
51 N (DA)
20 N (SA)
51 N (DA)
Sights Fixed Fixed Fixed
NOTE: Use of the "jet funnel" magazine well attachment and translucent high-capacity magazines on the USP Expert, USP Custom Combat, and USP Combat Competition, or as an accessory on other USP models is not recommended for military and law enforcement users.

x = Model Variant
*Single/Double Action, **Law Enforcement Modification

Technical data subject to changes. Please contact HK's Service Department at 706.568.1906 for more information.

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