The Beretta 92FS is seen in the holster of U.S. Army personnel, including General Paulson (Holmes Osborne). Colonel Kerkmejian (Michael Rose) is also seen with one in the climax of the film.
Henry Harold 'H' Humphries (Samuel L. Jackson) chambers a SIG-Sauer P228 when the first two FBI agents arrive to his home. Later his wife, Rina (Lora Kojovic), is seen with a P228 when the second wave of agents arrives.
In the climax, Mr. Bradley (Randy Oglesby) pulls out what appears to be a Taurus Model 85. Later, Steven Arthur Younger (Michael Sheen) obtains the revolver and threatens the interrogators with it.
Agent D.J. Jackson (Brandon Routh) carries a Remington 870 when the FBI tries to apprehend Henry Harold 'H' Humphries (Samuel L. Jackson). The shotgun is fitted with rifle sights and spare shell holder on the butt-stock.
MP Winston (Dayo Ade) fires a Mossberg 500 with heat shield and fiber-optic front sight several times at the steel door when Henry Harold 'H' Humphries locks himself into the interrogation room with Younger's kids. Later, another soldier is seen with the same shotgun.
In a photo, Steven Arthur Younger (Michael Sheen) holds a Kalashnikov rifle. It looks like an AKS-74 with the butt-stock folded (see plate on rear of receiver indicating it is a side folding AK variant. Since no other details are given, the default assumption is that it is an AK-74 or other side folding variant.
M4A1 rifles are used by various U.S. Army soldiers, during the evacuation as well as at the temporary Command Center set up in a school. The M4A1s are usually fitted with holographic sights, fore-grips, and weapon lights. The M4A1 of a Black Ops operative is fitted with a red dot sight in a photo.