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Treat Williams (December 1, 1951 - June 12, 2023) was an American actor whose career spanned four decades and included varying roles in such films asPrince of the City,The Eagle Has Landed,Dead Heat,The Devil's Own, and1941in addition to three films inThe Substituteseries as well as roles in such television series asWhite Collar,Blue Bloods,Hawaii Five-0, andEverwood. He died at the age of 71 after being involved in a motorcycle accident. Treat Williams can be seen using the following weapons in the following films:
| Character | Firearm | Notes |
|---|---|---|
| James Bennett | Glock 19 | "In the Wind" (S4E16) |
| James Bennett | Walther PPK | stainless, "In the Wind" (S4E16) |
| Character | Firearm | Notes |
|---|---|---|
| Sheriff Marshall T. Becker | Springfield Armory XD | - |
| Character | Firearm | Notes |
|---|---|---|
| John Finnegan | Calico M955A | Appears as the "M1-L1 triple-pulse rifle" |
| John Finnegan | Ithaca 37 | - |
| Character | Firearm | Notes |
|---|---|---|
| Karl Thomasson | SIG-Sauer P229 | - |
| Karl Thomasson | M14 | - |
| Character | Firearm | Notes |
|---|---|---|
| Billy Burke | Ruger KP94 | - |
| Character | Firearm | Notes |
|---|---|---|
| Col. Nathan Fitzgerald | M1911A1 | - |
| Character | Firearm | Notes |
|---|---|---|
| Critical Bill | Smith & Wesson 659 | - |
| Critical Bill | Mossberg 500 | attached laser |
| Character | Firearm | Notes |
|---|---|---|
| Det. Roger Mortis | Beretta 92F | - |
| Det. Roger Mortis | Smith & Wesson Model 29 | - |
| Det. Roger Mortis | IMI Uzi | - |
| Character | Firearm | Notes |
|---|---|---|
| David Ziegler | Smith & Wesson Model 36 | - |
| Character | Firearm | Notes |
|---|---|---|
| Ernie Wyatt | Smith & Wesson Model 28 | - |
| Character | Firearm | Notes |
|---|---|---|
| Capt. Harry Clark | M2 Carbine | - |