Anyone have any experience with a .22lr convx for a Taurus PT99/92?

[ZombieHunter]

I did some googling but my google-fu is admittedly lacking. Found one but the website looked real sketchy.

 

[GZOh_Jr]

I have seen them a couple times, but don't know how good. Ciener is the brand.

http://www.deltaforce.com/catalog/cienerccukits.html