Massachusetts Approved Firearms Roster: Smith & Wesson M&P340
The Massachusetts approved firearms rosters list 2 versions of the Smith & Wesson M&P340. 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 |
|---|---|---|---|
| M&P340 | .357 Mag. | Semi-Automatic Pistol | Approved Handgun Roster |
| M&P340 (no internal lock) | .357 Mag. | Semi-Automatic Pistol | Approved Handgun Roster |
Specifications of the Smith & Wesson M&P340 (no internal lock), 1.88 in barrel
- Caliber
- .357 Magnum
- Capacity
- 5
- Barrel length
- 1.88 in
- Height
- 4.3 in
- Width
- 1.3 in
- Weight
- 13.8 oz
- Action
- Double action only
- Frame
- Scandium
- Finish
- Black
- Sights
- Night sights
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 Smith & Wesson M&P340
The M&P340 is a small frame double action only revolver chambered in .357 Magnum. It has a scandium frame and a 1.88 inch barrel.