This gun is strange: It seems to b a repeater but it doesn`t have a chamber stem or anything else to open the chamber. The telescope mount is wrong. Picatinny rails don't work that way!
On a second thought: That's how a AI would draw a gun.

On a second thought: That's how a AI would draw a gun.

It's hand drawn and based on a 3D model of a modernized Enfield. The artist may have made a few mistakes, but keep in mind that older weapons often had more externally complex workings than modern semiautomatics with the mechanisms happening in the receivers.

Here's the source:
https://www.artstation.com/artwork/wJ3WR5