11mm Dovetail to 21mm Upgraded Build-in Locking Screws Picatinny Rail Low Profile Scope Mount Converter Base 3/8" to 7/8" Converter

Very good product. Fits very well on Gamo Wildcat Whisper. The edge is pretty sharp, that’s why it fits well in that 11mm dovetail mount. The only recommendation - buy longer than 9 slots. Next time I would buy 11 at least. For the money it’s great.

Works great, very sturdy and seems tough, definitely buying again if needed in the future.

This is a quality item that grips my Hatsan Mod 25 pistol's 11mm dovetail rails firmly, and I had no trouble mounting Picatinny optics on the top of it. It has three holding screws which is very appropriate for the air guns it will mostly be mounted on (they have intense recoil shocks). The screws are small Torx head for which the vendor supplies the proper "hex" key. My only recommendation would be to make the screws larger in diameter or of high-grade steel. That's because you may want to use loc-tite / threadlocker on them, and even the blue version of that stuff can hold so tight that you won't be able to get these screws out without snapping them off. Don't ask me how I know this.

Happy

Perfect

Great product blocks securely to my dovetail. This seems very sturdy. Mounted my thermal scope perfectly.

Great fit and build quality. The installation was easy and worked well to install my red dot.

It works perfectly!