Oates (Ed Harris) carries a derivative of the M1911A1 pistol in a shoulder holster. Rebels who hijack a plane to drop propaganda leaflets that proclaim that the rebel leader Rafael is still alive also are armed with a M1911A1.
Smith & Wesson M&P Revolver
When Price (Nick Nolte) is wounded and forced to hide from Nicaraguan soldiers, an old woman gives him a Smith & Wesson M&P revolver fitted with pearl grips to defend himself.
Colt New Service Revolver
A Colt New Service Revolver is carried by one of a group of teenage rebels who is holding Marcel Jazy (Jean-Louis Trintignant) hostage.
Oates (Ed Harris), an American mercenary whom Price encounters throughout the film, carries a Uzi submachine gun which he carries during the scenes set in Chad. Later, a Nicaraguan rebel leader (Lucina Rojas) also is armed with a fixed-stock Uzi.
Rifles
Valmet M71S
The Chadian rebels that Russell Price (Nick Nolte) accompanies in the introduction of the film are armed with Finnish Valmet M71S rifles (impersonating AK-47 rifles, which were not widely available to American Armorers prior to the year this movie was filmed). Note: Just after the filming schedule (1982) more accurate versions of the AK-47 and AKMs started to be imported into the U.S.
AK-47
One of the rebels in the introduction is armed with what appears to be either a genuine AK-47 or Norinco Type 56 rifle, though it is too blurry for accurate verification.
Heckler & Koch G3A3
When Price hitches a ride on a truck with the Chadian rebels, most of the fighters aboard are armed with G3A3 rifles with tropical handguards.
FN FAL Variants
FN FAL 50.00
One of the most common weapons in the film is the FN FAL rifle, which is used by Nicaraguan Guardia Nacional soldiers and FSLN rebels. Oates (Ed Harris) also carries a FN FAL with a telescopic sight in Nicaragua, using it during a shootout with rebels that Price and fellow journalist Claire (Joanna Cassidy) are following. A FN FAL is used by a soldier to summarily execute Alex Grazier (Gene Hackman), in a moment deliberately modeled after the real life death of ABC reporter Bill Stewart.
Trivia note: Careful viewing of the screenshots reveal that the rifles have the Milspec FN Factory blank firing adapter screwed into the FAL flash hider! That knob at the end of the flash hider is the end tip of the BFA.
FN FAL 50.63
The FN FAL 50.63 Paratrooper rifle, distinguishable by its shorter 18 inch barrel and folding stock, is seen in the hands of Chadian rebels and Nicaraguan soldiers.
M1 Carbine
FSLN rebels are mostly armed with the M1 Carbine with 30 round magazines.
Mauser vz.24
During the shootout at the church, one of the young rebels is armed with a Mauser vz.24 rifle, likely ex Nicaraguan army.
Machine Guns
M60
A gunner aboard a Chadian government helicopter fires a M60 machine gun when it ambushes the rebels in the introduction.
FN MAG
FN MAG machine guns are mounted on Nicaraguan Guardia Nacional Jeeps and helicopters.