In war, schit gets broken, cuz soldiers can break anything. Take this CZ 58 for instance. This one was donated by the Czechs to the Ukrainians, as you can tell by how nearly new it looks,...but some ham-fisted twit busted the side-folding stock off. But hey, Ukraine is a nation of farmers, and farmers know how to weld. So some shifty beet farmer with a buzz box stuck an AK under-folder stock on this bich and called it a day.
Russian sniper.
Some foreign volunteers from countries that border Ukraine are able to bring guns directly with them. The Czechs have recently liberalized gun ownership there, so many Czech volunteers bring guns with them to Ukraine. These Czech guns belong to one such dude, who somehow had the juice to get and bring select-fire weapons. Here we see a CZ 807 (very similar to the Bren 2 rifles already seen in country, but a newer variant), a CZ Scorpion Evo 3 A1 SMG and a CZ P10 handgun.
Another PKM sporting an EOTech. These EOTech optics sure got distributed to the PKM gunners quickly. Hardly any PKM is without one now.
In this picture, guy in the rear is holding up a rare captured AEK-971 "counter-balanced action" rifle. These came out of a program to try to create a zero-recoil rifle that could put bursts in a very tight pattern on target and grew out of the AN-94 rifle of similar goals and design. Larry Vickers did a video on this rifle when he visited Russia in 2014. Not quite as rare as a moon rock, but close.
German MG3s are now making their way into the theater.