Duty Arms Index
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Which police departments use the Smith & Wesson M&P9?

Short answer: 48 agencies in the index currently issue the Smith & Wesson M&P9, including Chicago Police Department, Los Angeles County Sheriff's Department, California Highway Patrol and Detroit Police Department. 43 carry it as their primary duty pistol (6.9% of agencies with a sourced primary duty pistol), the #6 duty pistol family in the index. 1 more agency lists it as previously issued and no longer carries it. See the most common police duty pistol for the full ranking.

Data coverage: Based on 48 agencies in the Duty Arms Index with a current, sourced Smith & Wesson M&P9 entry, any role except SWAT/tactical-unit listings (every M&P9 entry: the original M&P9, the M2.0 (incl. Compact and Metal) and the M&P9c). Shares are of 623 agencies with a sourced primary duty pistol. Counts include only current entries with a public source; agencies not yet in the index, or without a sourced entry for this item, are not counted, so treat shares as a picture of the Duty Arms Index, not of every agency. Data last updated Oct 10, 2026.

48
Agencies issuing it
43
As primary duty pistol
27
States
1
Previously issued (dropped)

How agencies issue it

Each agency counted once, under its highest role for the M&P9.

  • Primary duty43 (89.6%)
  • Backup / optional2 (4.2%)
  • Other / authorized3 (6.3%)

By agency type

  • Local police36
  • Sheriff's office6
  • State police / highway patrol5
  • Special jurisdiction1

Variants and generations

As named in each agency's source.

Agencies that stopped issuing the Smith & Wesson M&P9 (1)

Agencies with a sourced previous M&P9 entry and no current one, newest change first (year shown where the source dates it), with the duty pistol they carry now. Most common replacement: Glock G45 (1).

AgencyPreviouslyCarries now
San Mateo County Sheriff's OfficeCASmith & Wesson M&P9Glock G45 Gen5

Smith & Wesson M&P9 agencies by state

Every agency with a current, sourced M&P9 entry, largest first. Each links to its loadout, sources and history.

Frequently asked

Which police departments use the Smith & Wesson M&P9?
48 law enforcement agencies in the Duty Arms Index currently issue the Smith & Wesson M&P9, including Chicago Police Department, Los Angeles County Sheriff's Department, California Highway Patrol and Detroit Police Department. 43 of them carry it as their primary duty pistol. The list covers every M&P9 entry: the original M&P9, the M2.0 (incl. Compact and Metal) and the M&P9c.
How common is the Smith & Wesson M&P9 in police service?
43 of 623 agencies with a sourced primary duty pistol (6.9%) issue the Smith & Wesson M&P9 as that primary, making it the #6 duty pistol family in the index, behind the Glock G17 and Glock G45.
Which states have the most agencies using the Smith & Wesson M&P9?
California (6), Arizona (3), Colorado (3) and Minnesota (3). Agencies in 27 states have a sourced M&P9 entry. State counts follow where the index has the most sourced agencies, so they are not a census.
Which agencies stopped using the Smith & Wesson M&P9?
1 agencies list the M&P9 as previously issued and no longer have a current M&P9 entry, including San Mateo County Sheriff's Office. The most common replacement is the Glock G45 (1 of them).

Who uses other duty pistols

Glock 17 · Glock 45 · Glock 19 · Glock 22 · SIG Sauer P320 · Glock 47 · Glock 21 · Glock 23 · Glock 43X · Glock 26