Wow, just looking at this piece has given me a re-found respect for you Braille-scale builders! I don’t see how you can do it. I have enough troubles bending and gluing photo-etched parts. I will learn to start soldering them soon. Can’t even imagine trying to do it 1/72 scale. That is an issue anyone that buys this kit will need to overcome.
Mini World appears to be a relatively new company or at least a new off shoot from a company in the Ukraine. There were many companies that carried their line (all overseas) but only Hannants had this particular item listed on their website. Mini World does not have a website of its own. Their items are pretty impressive. They currently have 18 different machine guns on the market. Most are for WWI aircraft but I did also notice two different DShK kits available as well.