Hi Kenneth comes with 3 dot. Heres the specs. Specifications and Features:
HK HK45C Tactical V3 Semi Auto Pistol 745033T-A5
.45 ACP
10 Round capacity
4.57" Threaded Barrel
Double/Single action
No manual safety
Decock only
Fiber reinforced polymer frame
Polygonal bore
Corrosion proof
Oversized trigger guard
Uses Browning link less recoil operating system
Mil-STD 1913 Picatinny rail
Ambidextrous magazine release
Ambidextrous slide release
O-Ring barrel
Contoured and radiused slide with forward slide grooves and anti-glare longitudinal ribs
Replaceable grip panels
3-Dot sights
Overall length 7.91"
Tall 5.51"
Wide 1.54"
1.82 lbs Empty
Black https://hk-usa.com/hk-models/hk45-compact-tactical/

H&K says these come with 3-Dot Sights. H&K Factory Specifications are listed here : https://hk-usa.com/hk-models/hk45-compact-tactical/

Fixed (Open square notch rear sight with contrast points)

3 dot here is a review personaldefenseworld.com/2013/03/hk45-compact-tactical/#rear_phatchfinal-6