Help to ID two different firearms in the movie

[Pyramid Silent]

Hello! Excuse me, I have some request: may somebody help me to ID the two different firearms in the movie [http://www.imdb.com/title/tt6095090/?ref_=nv_sr_1 The Bride (Nevesta)]. It's 2017 Russian movie (maybe, it's help with ID).

View from the front sight.

Slighte better view of cylinder.

View from the right side.

Smoking barrel after shot.

[Pyramid Silent]

Barrel leight is seen.

Ejector rod is seen.

Cylinder is partly seen.

Unknown shotgun (or rifle) is seen at the bachground, center,behind the old doll.