The Panzerschreck impressed Hungarian officers and soldiers alike but the Germans didn't gave a license we could only use what they manufactured. So after studying it our engineers drew up our own version with several modifications which made the manufacturing process easier and gave a somewhat ballistically superior rocket.
The caliber was reduced to 60 mm, the maximum range was 150 m, the efficient range was somewhere between 60 and 70 meters.
It was adapted in 1944, I don't know more precise date only that it arrived too late and we could produce only a small amount and that was nowhere close to the actual demand.