The Green Hell (Kautschuk ("Natural Rubber")) is a 1938 German B&W adventure movie directed by Eduard von Borsody and loosely based on the real story of Henry Wickham, British adventurer who illegally exported a large shipment of Brazilian rubber seeds to the British Empire in 1876, that allowed to create rubber plantations in British colonies and bring the end of the Brazilian monopoly on natural rubber. The story of Wickham's expedition is supplemented with a love line with a rivalry with the richest Brazilian planter for the heart of the daughter of the British Consul.
The following weapons were used in the film The Green Hell (Kautschuk):
During the encounter with a large pack of caimans, Wickham's Safety Hammerless revolver switches to an anachronistic Smith & Wesson Military & Police.
Reichsrevolver M1879
When José, a plantation worker, kills another worker in a fight and goes on the run, two of the overseers fire Reichsrevolver M1879 revolvers. Reichsrevolver M1879s are also used by Brazilian officers in Fort Ambe. This revolver is anachronistic for 1876 and very alien for Brazil.
Unidentified revolvers
Don Alonzo de Ribeira (Gustav Diessl) carries a revolver in holster. Only a part of the grip is seen. It resembles the grip of Wickham's Smith & Wesson Safety Hammerless so maybe the same prop is reused.
Pistols
Chatellerault Cavalry Model 1822
In the same scene Percussion Cap Pistols are seen in hands of two overseers, shooting after the fleeing José. One of the pistols is definitely a Chatellerault Cavalry Model 1822 while another one looks similar except for minor details, like the shape of the barrel band, and may be a commercial version of the Cavalry pistol.
Rifles
Mauser Karabiner 1871
During the adventures in Amazon jungles, Henry Wickham (René Deltgen) uses a Mauser Karabiner 1871. Don Alonzo de Ribeira (Gustav Diessl) and his men also use Karabiner 1871s when they hunt for Wickham.
Mauser Gewehr 1871
Brazilian soldiers are armed with Mauser Gewehr 1871 Infantry rifles. Some bayonets, used on the rifles, nevertheless look more like Model 1898.
Trivia
Artillery
Napoleonic era style field guns are seen in the Fort Ambe.