Pair of trousers, those are an Austrian pair of trousers in that photograph.
I cannot see the bolt and magazine. The picture is too dark. By the bayonet lug it looks like a Mauser. Then again, the bolt is not turned down (or at least it cannot be seen) so it could be a straight pull bolt Steyr-Mannlicher.
Why did they remove the Firearms Section of this forum, that was a good section.
Of course you're asking two anti-Gun types about a gun, two anti-Gun types who also are stupid.
As I have firearms, I've given close look at that rifle, it's of course un-scoped, but I think it's a Kar98k, a Karabiner 98 kurz bolt-action rifle, it's a Mauser, that would take 7.92×57mm Mauser cartridges, which are rimless bottlenecked cartridges.
I'm 98.9% sure that that rifle is a Kar98k.
Here, this is a picture of a Kar98k, what do you think?
This is that above rifle with a stripper clip with five 7.92×57mm Mauser cartridges.