I'm the one that originally asked to see if irunguns could bring them in after the HK243 ruling. Hoping to keep it secret so it would be a pleasant surprise.
Honestly surprised no importers tried to bring them in before. I did some basic research on the gun it seems to be that it's very mechanically similar to the Beretta Arx 160-22 which we have already have a NR FRT for, so basically a .22 blowback in a G36 shell which can't be prohibited as a variant like the Sig 522 as the g36 isn't a named prohibited. The only way it could go sideways is if it can be a converted to full auto but fingers crossed it's like the Arx 160-22 so not convertible.
Edit: I'm not to hopeful on having full capacity magazines as Walther did make a HK 416 "pistol" which shares the same magazines with the g36 and 416 rifle. But luckily Walther also makes a colt m4-22 which is a "different" magazine (different sku, different packaging and different markings too I I think) and has no similar "pistol".