Rifles

M4A1

U.S. Army soldiers are seen using M4A1 Carbines in "Moral Waiver" (S1E02). In "Secret Santa" (S2E08), both Dr. Cal Lightman (Tim Roth) and John Parks (Jason Gedrick) are seen handling M4 rifles. Several soldiers are seen carrying M4A1 rifles fitted with M203 grenade launchers in "React to Contact" (S2E14).

Colt M4A1 with M68 Aimpoint scope - 5.56x45mm.

Sheila Lake (Alicia Lagano) fires her M4A1 down range. This one is fitted with a M68 CCO/Aimpoint CompM2 red dot sight and a AN/PEQ-2 IR Target Pointer/Illuminator/Aiming Light, as well as a vertical foregrip.

In "Secret Santa" (S2E08), Dr. Cal Lightman (Tim Roth) and John Parks (Jason Gedrick) is handed an M4.

In "Secret Santa" (S2E08), John Parks (Jason Gedrick) holds an M4.

Remington 700PSS

A Remington 700PSS is seen carried by an FBI sharpshooter while riding in a helicopter in "Sacrifice" (S1E13).

FBI SWAT team member carries a Remington 700PSS Rifle with Harris Bipod and Scope. These rifles are chambered in 7.62x51mm (short action) and .300 Winchester Magnum (long action)

AKM

Both Special Forces and enemy combatants are seen with AKM assault rifles in "Secret Santa" (S2E08).

AKM - 7.62x39mm

In "Secret Santa" (S2E08), John Parks (Jason Gedrick) holds an AKM.

Handguns

M1911A1

In "React to Contact" (S2E14), Dr. Cal Lightman (Tim Roth) is seen taking out an M1911A1 from a drawer and then holds it in a standoff with Sgt. Jeff Turley (Enver Gjokaj).

Pre-War Colt M1911A1

In "React to Contact" (S2E14), Dr. Cal Lightman (Tim Roth) is seen taking out an M1911A1 from a drawer and then holds it in a standoff with Sgt. Jeff Turley (Enver Gjokaj).

SIG-Sauer P226

In "React to Contact" (S2E14), a SIG-Sauer P226 is pulled by Sgt. Jeff Turley (Enver Gjokaj).

Factory black (K-Kote) SIG-Sauer P226 pistol - 9x19mm. This is a real movie gun and has appeared in several motion pictures.

In "React to Contact" (S2E14), a SIG-Sauer P226 is pulled by Sgt. Jeff Turley (Enver Gjokaj).

Glock 22

The Glock 22 is used by FBI agents, specifically Special Agent Ben Reynolds (Mekhi Phifer) in "Sacrifice" (S1E13). In some angles, the handgun appears to be a Glock 23.