Massachusetts Approved Firearms Roster: Heckler & Koch HK45
The Massachusetts approved firearms rosters list 2 versions of the Heckler & Koch HK45. Each line below is shown as the roster prints it.
Checked against the current official editions: Approved Handgun Roster, October 2026, Formal Target Shooting Firearms Roster, April 2026, Olympic Competition Firearms Roster, May 2018
| Version as listed | Caliber | Action | Roster | UPC |
|---|---|---|---|---|
| HK45 | .45 ACP | Semi-Automatic Pistol | Approved Handgun Roster | |
| HK45 Compact | .45 ACP | Semi-Automatic Pistol | Approved Handgun Roster |
Specifications of the Heckler & Koch HK45, .45 ACP
- Caliber
- .45 ACP
- Capacity
- 10 rounds
- Barrel length
- 4.49 in
- Overall length
- 8.03 in
- Height
- 5.91 in
- Width
- 1.54 in
- Weight with empty magazine
- 30.86 oz
- Action
- Double action and single action, hammer fired
From the maker's page listed under Sources, checked October 28, 2026. Versions on the roster can differ in barrel length, sights and finish.
About the Heckler & Koch HK45
The HK45 is a .45 ACP pistol that Heckler & Koch developed from the USP45. It has changeable backstraps, an accessory rail under the dust cover and an O-ring barrel for a precise lockup between barrel and slide. The HK45 Compact on the roster is the shorter version with an 8 or 10 round magazine.