Movie gun. Aussie BP revolving percussion rifle

[pacanis]

I just watched The Legend of Ben Hall on Prime.
I'm having a hard time locating any information on this rifle used by the law... not sure if they are police, army or some kind of constable.

The movie also featured the Tranter Revolving pistol and rifle. That rifle of course does not have a forearm stock like the ones shown here. It probably didn't take them very long to figure out why that hand hold was not a good idea.

I'm assuming it's not just a movie gun, but I can't seem to narrow down my Google searches and the movie did not show up in IMFDB.
I'd like to read about it if it did exist.

 

[swamp yankee]

Looks like a Colt 1855.

 

[64Springer]

Sure looks like it.

 

[pacanis]

Looks like a Colt 1855.

Thanks. I should have scrolled further down the Wiki page.
They have a picture of one with the forearm stock under calling it a "root carbine".

 

[Sam squanch]

The guy in the last picture might just regret holding the old colt that way…..