Highly doubtful Lapua is sending ANY brass into Ukraine ,for WHAT purpose ??. Iron Block Countries use Steel cases ,NOBODY is reloading war fodder . War is War and it simply has to go BANG and hit it's intended target .
Red Army Brown Bear
Every ex-Warsaw Pact country, ex-Soviet Republics, China, Vietnam, Egypt, Iraq, Burma, India, and many others produce 7.62x39mm ammo (though the quality varies from country to country). Even Finland produces the ammo for its AK series of weapons in case of war with Russia. Highly unlikely Finland is supplying anyone let alone Ukraine .
Germany, Bulgaria, Hungary, Romania, and Czechoslovakia, as well as non-Warsaw nations such as China and Yugoslavia, also produce tens of millions of rounds for military use. Nations in Asia, Africa, and Latin America receive a large share of it for the various proxy wars !.
Numerous AK variants
Unsurprisingly there are a ton of AK-types in Ukraine, including the Russian-made AKM and AK 74 series alongside the RPK light machine gun. These rifles either fire the 7.62×39 or the 5.45×39 and can be either fixed- and or folding-stock types. Countries like Serbia have donated their AK variants to Ukraine, and we’ve even seen Chinese Type 56 rifles used by the Ukrainian forces. It’s somewhat difficult to tell which AKs have gone to the Ukraine Foreign Legion, but they most certainly have been seen wielding them.
MY Guess would be Taiwan South Korea would be cranking out 5.56X45mm for the M4 ,FN Scar and Bren Rifles .
The Bren is another short-stroke gas-piston gun similar to the SCAR, so much so it’s often joked that the Bren is the Czech SCAR. The Czech Republic donated the weapons to Ukraine and they’ve been popular with the Foreign Legion. The Bren is a modern, modular rifle that’s accessory-ready, fairly light, and quite reliable. The gun comes in either 5.56 or 7.62, but we’ve only seen a 5.56 variation in use in Ukraine.
Another unsurprising sight is the PKM belt-fed machine gun. This medium machine gun fires the 7.62x54R and has been seen in the hands of American volunteers fighting in Ukraine. This belt-fed support weapon is one of the better medium machine guns out there. It operates on the same principle as the Kalashnikov and is perfectly suited for the Ukrainian winter. It’s also light for its design and quite effective.
M249 SAW/ FN Minime
The Belgian FN Minime became the American M249 SAW. The two weapons are largely the same and with both Belgium and the United States donating weapons to Ukraine, it’s tough to say which is which by looking at photos. This 5.56 caliber, belt-fed, light machine gun provides a squad with a
designated support weapon and is much easier to use in urban areas and tight quarters than a medium machine gun. These guns offer portability for a machine gun with a reliable open-bolt design.
M240/FN MAG machine guns
Like the M249 and Minime, the FN MAG and M240 are largely the same gun but with different designations. The M240 is
my favorite medium machine gun. It’s insanely reliable and quite accurate and capable. It’s admittedly heavy but easy to use and quite effective. This 7.62 NATO machine gun offers a general-purpose machine gun for infantry and vehicle use and is at home in both defense and offense. It’s tough to find a more reliable machine gun out there.
CZ Scorpion's are also popular