There's a handful of unique weapons you can find in story mode, which have a small little animation that plays when you pick them up. I never featured them before so i thought this was about as good a time as any.

TIMELINE
00:00 Schofield Revolver
00:19 Double Action Revolver
00:43 Lancaster Repeater
01:06 Semi Auto Shotgun
01:31 Pump Action Shotgun
01:56 END