
Find it in SMG/Rifle - Carbine.
A revolving carbine that no one but Battlefield 1 players know. There were only around 300 of these built in real life, so you get to experience an extremely rare piece of firearm history, at least in VR.
It fires its own proprietary 8x50mm rimmed cartridge. It may look similar to Nagant's 7.62x38mm, but the bullet is substantially longer and thus carries more mass to punch with. Do note that it only comes with a lead bullet, so you'll have to aim carefully if you're facing a well armored sosig.
The real Pieper carbine also uses the same cylinder design as Nagant revolver, which creeps forward to seal the gap between chamber and barrel. This means it can take suppressor. Just ignore the fact that I was too lazy to animate the cylinder to creep forward.
Historical information can be found at the spawn table.
The Pieper M1893 model and sound are ripped from Battlefield 1.