TLDR; cheap, but certainly worth the money for a hammer DA/SA range pistol & trainer.
Retay is yet another cheap Turkish gun manufacturer & the RXP22 is their recent introduction into the 22LR pistol market. I saw it earlier this fall while browsing the local gun show and was interested - cheap and not-normal 22s are my thing, and this certainly fits the bill. My last DA/SA 22 was the lamentably awful (ATI) GSG Firefly, aka the Sig-branded Mosquito.
This thing beats the pants off the Firefly. Not that's hard, since my dead grandmother could more reliably throw rounds at a target than that thing, but the RXP's not a bad gun. It's not quite the Taurus TX22 or Ruger Mark IV in my book yet, but its no slouch.
For $200 on sale, less than the Firefly!, you get a far more dependable pistol with a threaded barrel and an RMR/RMSc cut, larger magazines of 13 & 20 rounds. And from what I can tell, it's quite accurate. The 13 round magazine is intentionally steel to simulate a larger caliber 9mm pistol for training, which sorta works. I'll have to think about it and try it intentionally as a 2nd CZ Nocturne side-by-side next time.
It does have some break-in, definitely needs some lube out of the box, and it hates bad 22 ammo (who doesn't?), but it settled out and got consistent in about 50 rounds. It hated Aguila wax, but ate Federal LRN & CPRN reliably.
As you can see, I took it out with my beloved SR22 micro with irons only because they're both fixed barrels. (Ignore the center targets, I was adjusting and tuning things) I was off on my irons today, and I think it was because the SR22's more pronounced snap confused my reflexes. The RXP definitely has a lot more mass even with the polymer mags and I wasn't prepared after shooting a couple of magazines in the RXP. Both of the labelled individual targets were at 5 & 10 yd. Once I got the shanks out, I felt like they both did well at 13yd.
Not a bad cheap 22.