I have watched an awful lot of videos of different full auto guns and different trigger systems and even some military rifles and so, that video and 1900 figure struck me as perhaps plausible. The 22LR means a very short bolt throw so it does cycle fast! So maybe it's true?!
Even so I can hear what they say is 1900 rpm and have heard my binary trigger going all out and the Charger can make it sound obviously not semi auto and yet very similar to one stream of shots. However I can't match how fast that TX22 was shooting! There's a difference. FRT's may be better than Binaries?
The TX22 holds 22 rounds?! And it's only around $300 bucks, and another $100 for the trick trigger (FRT). 22 rounds on tap! My P22 only holds 10! <k II's and MK IV's are all 10 rounds too. I used to have a MK II that was like, impossible to miss with, wow. I regret letting that one get away from me.
That price is sweet, especially considering the cost of preban autos, ammo, paper trail, etc.
These 22 options seem much more reasonable except for maybe those who have their ammo paid for by tax payers.
I used to have a Ruger mk II like that until someone broke in and took the collection. I know how you feel.

