Brother (Brat) is a 1997 cult Russian film directed by Aleksey Balabanov. The story revolves around a young Russian man named Danila (Sergei Bodrov Jr.), who goes to join his older brother in St. Petersburg. But Danila's older sibling is a gangster and a cold-blooded contract-killer. Danila is asked to kill someone, and soon learns that he finds killing easier than living. (People who don't speak Russian may find it ironic and humorous that the Russian word for 'brother' is 'brat', so any of us who have brothers will find humor in that translation.)
The following weapons are featured in the film Brother:
Danila's first gun is a locally-produced .22 LR revolver (which apparently has no official name). These cheap revolvers were produced in the 1990s by one of the gangs which operated out of the Moscow Suburbs. Many people wrongly identify it as a Nagant revolver.
A suppressed unknown submachine gun is seen in Viktor's kitchen, with a design somewhat reminiscent the Sa vz. 23. Apparently, he is a custom-built submachine gun, one of the countless that were made in the former USSR in the 90s by criminals and rebels, and whose quality ranged from crumbling in the hands to the factory-made level.
Colt M16A1
An M16A1 is seen in the hands of the girl in the poster at the end of the film.