Looks interesting and the price point is impressive.

Threaded, tensioned carbon fiber barrel, Bentz chamber, 17" long
Uses Remington 700 trigger group
Uses Ruger 10/22 magazines
Weighs just over 5 lbs

Sells for about $750-800.

The only drawback I see is that the rail is 0 MOA.

How do y'all think it compares to the CZ457 precision trainer?

There's a multi-page thread on Rimfire Central on this rifle.  The info you seek is there, the good & not so good.

99% sure I checked one of these out last Saturday at a LGS. It was a Christensen rimfire rifle with a carbon fiber barrel and looked just like that.

Insanely light, was really nice to shoulder. Both my friend and I felt the bolt and action felt really cheap, but maybe we're just too used to our 452s.

From the reviews I've read and the gun I handled and shot, I was left unimpressed.

The CZ Precision Trainer is undoubtedly a better rifle.

Lightweight is great...if you are hiking 5 miles with it.  If your intention is to sit a bench and target shoot, it is not the ideal.  While 22 LR does not have what I would consider recoil, a heavier gun is very advantageous while bench target shooting.  A rifle that does not move while you fire a round and cycle the bolt allows you to stay on target and maintain your sign picture.  Lightweight rifles tend to be "jumpy".

Here is the Rimfire Central thread...
https://www.rimfirecentral.com/forums/showthread.php?t=1195603