Michigan State Police vs Illinois State Police: what guns does each carry?
The Michigan State Police issues the SIG SAUER P320 / M18 as its duty pistol; the Illinois State Police issues the Glock G45. Both are chambered in 9mm Luger. Both run pistol red dots (SIG SAUER ROMEO-M17 and Holosun HE509T-RD X2).
From current, published entries with public sources in the Duty Arms Index; data last updated Oct 9, 2026. Agency-level issue only; individual officers may carry approved alternatives.
Photo: Tony Webster, CC BY 2.0, via Wikimedia Commons. Model photo, not the agency's own firearm.
GLOCK G45 shown with a Trijicon RMR red dot and Streamlight TLR-8 A light mounted. Photo: Davidh1988, CC BY-SA 4.0, via Wikimedia Commons (background removed). Model photo, not the agency's own firearm.
Side by side
| Item | Michigan State Police | Illinois State Police |
|---|---|---|
| Duty pistol | ||
| Duty pistol | SIG SAUER P320 / M18Official sourcesource 2026 | Glock G45Official sourcesource 2026 |
| Pistol caliber | ||
| Pistol caliber | 9mm Luger | 9mm Luger |
| Optic | ||
| Optic | SIG SAUER ROMEO-M17Official sourcesource 2026 | Holosun HE509T-RD X2Official sourcesource 2026 |
| Weapon light | ||
| Weapon light | SureFire X300TReliable secondarysource 2026 | Weapon lightOfficial sourcesource 2026 |
| Patrol rifle | ||
| Patrol rifle | FN FN 15 SRP G2Official sourcesource 2024, not re-verified | Not yet sourced |
| Shotgun | ||
| Shotgun | Beretta 1301 Tactical | Not yet sourced |
| Previous duty pistol | ||
| Previous duty pistol | — | Smith & Wesson Model 5904 (until 1999) |
| Agency type | ||
| Agency type | State police / highway patrol | State police / highway patrol |
| Public sources | ||
| Public sources | 5 | 2 |
"Not yet sourced" means no public source is in the index yet, not that the agency doesn't issue one.
What each agency carries
What gun does the Michigan State Police carry?
The Michigan State Police's current duty pistol is the SIG SAUER P320 / M18 (9mm Luger), with a SIG SAUER ROMEO-M17 optic and a SureFire X300T light, per official agency or government records (2026). Its current patrol rifle is the FN FN 15 SRP G2 (5.56x45mm NATO), per official agency or government records; based on a 2024 source and not re-verified since.
Full Michigan State Police loadout, history and sources →What gun does the Illinois State Police carry?
The Illinois State Police's current duty pistol is the Glock G45 (9mm Luger), with a Holosun HE509T-RD X2 optic and a Weapon light, per official agency or government records (2026).
Full Illinois State Police loadout, history and sources →More agency comparisons
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Browse by state: Michigan · Illinois · Most common duty pistols