Good morning, guys!
An antitank rifle from the WW2 era. The soviet Degtyarev PTRD-41.
It was a 14.5 mm rifle and was a powerful weapon, able to pierce the side armour of most of the german armoured vehicles of 1941. Of combined short recoil and manual mechanism, was reliable even in the worst conditions, for this reason the PTRDm-41 was prefered over the more elaborated Simonov stablemate firing the same cartridge.
Cheers.