"The Losers", A.K.A. "Nam's Angels", (not to be confused with the 1989 movie "Nam Angels"), is a 1970 Vietnam war movie starring William Smith as the head biker.
A small group of Hells Angels bikers are recruited by the US Army to rescue an American CIA agent, (played by director Jack Starrett), from a NVA/Viet Cong military camp in neighbouring Cambodia. The movie was shot in the Philippines and was based by an original script by Alan Caillou.
Submachineguns
Madsen M50
Each of the bikers motorcycles sport a Madsen M50 9mm which is welded on the front of the bike.
PPSh-41
More than one Viet Cong/NVA soldier is seen with a PPSh-41 fitted with a stick magazine.
M1928 Thompson SMG
The biker known as "Speed" (Eugene Cornelius) uses a M1928 Thompson with a straight magazine during the movies climax.
Rifles & Carbines
M16
Several US soldiers are seen with the original M16 rifle.
M1 Carbine
The M1 Carbine are seen in the hands of several US soldiers plus some Viet Cong.
M1 Carbine with 30 round magazine is seen in the movie by American soldiers.
M1903 Springfield
An NVA soldier is seen using a Springfield bolt action rifle.
Machine guns
M1919A4 MG
The bikers specially made "hog-wagon" sport two browning MG's. According to "Link" the wagon is "part Harley, part volkswagen".
Tank heavy machinegun
Various
Sawed off double-barreled shotgun
The biker "Dirty Denny" (Houston Savage) carries a sawed off double-barrelled shotgun.