Invasion U.S.A. is a 1985 action film starring Chuck Norris as a former CIA operative and the only man who can stop a terrorist invasion of the continental United States. While there was a 1952 film of the same name, the only common elements were an invasion on American soil by Soviet/Communist commandos using conventional weapons and the attempts by brave Americans to fight them off. The Georgia Army National Guard provided a massive amount of assistance to the production, which included several UH-1 gunships, M60 tanks, M113 APC's, and numerous soldiers.
The following weapons were used in the film Invasion U.S.A. (1985):
Terrorists also are armed with the Carl Gustav M/45 submachine gun, notably during the mall chase.
MP40 submachine gun
One terrorist armed with the MP40 submachine gun in the final assault.
Rifles
M16A1 Rifle Colt Model 603
The M16A1 rifle is used by US Army and National Guard soldiers and terrorists.
MGC Replica M16 rifle
Some of the terrorists in the final battle are seen with MGC M16 Replica rifles.
AK-47
Carried by Terrorists
Ruger AC556
Another weapon carried by Terrorists is the Ruger AC556.
Gewehr 98
Interestingly enough, it appears that one terrorist in the mass crowd scene is carrying a bolt action Gewehr 98!
Valmet M76F/RK62 assault rifle
The Valmet M76F rifle is used by terrorists in the film. Seen in the airboat assault on Matt's home as well as by the terrorists disguised as Coast Guard.
Handguns
M1911A1 Pistol
In a flashback, Matt Hunter (Chuck Norris) holds an M1911A1 on Rostov. The pistol also is seen in holsters of U.S. ARMY and National Guard troops. One with a scope is also seen used by Nikko (Alexander Zale), Rostov's right hand man, disguised as a National Guard soldier. This appears to be the same pistol later used in Popeye Doyle.
The Browning M2 is mounted on M60 tanks and Armored Personnel Carriers (provided by the Georgia Army National Guard) as the US military engages the terrorists.
The M72 LAW is used throughout the film. In a flashback, Rostov prepares to use the LAW before being thwarted. Also used twice by Hunter during the final battle. Hunter first used one to destroy Rostov's helicopter and then when Hunter took it from a terrorist he killed and uses it against Rostov. Also used by US Army and National Guard troops during the final assault.
Custom Under-Barrel "Grenade" launcher
Mounted under both M16A1s and M16/SP1 slab sided rifles is an unusual custom 'grenade launcher'. Seen used by the terrorist throughout the film. In the final battle one is used by Rostov (Richard Lynch) on a slab sided SP1 rifle with a three prong flash hider. Another is used by Matt Hunter (Chuck Norris) on an M16A1 rifle with a birdcage flash hider. It is a simple tube that is attached to the barrel (via cutting holes in the A1 style handguards) and has a pistol frame grip to hold onto. The pistol grip can clearly be seen in the final scenes to be that of a Walther P-38, and the weapon may have been modeled after the XM148 grenade launcher
Fictional Rocket Launcher Type 1
Mikal Rostov (Richard Lynch) uses a fictional mocked up launcher designed to slightly resemble an SA-7 Grail (Streyla) or Armbrust missile launcher, except he uses it in a direct fire role and he fires it multiple times without reloading.
Fictional Rocket Launcher Type 2
During the attack on the Central Command Center in Atlanta, Rostov picks up and uses a launcher that is very similar to the previous one, but not exactly the same. It has specific design differences. This could be the secondary mockup, since this one does not fire, whereas the slightly different one before is set up to fire pyrotechnical charges.