Things I liked: Can't think of a thing that I liked about these. I would not buy them again.
Things I would have changed: Better threads, Quality Control. The instructions that came with mine were a copy of a copy 10th generation, and the words were cut off on the right side of the page. The b-square web site did not have the instructions either. The vertical post that holds the scope from thrusting was too small in diameter for my gamo.
What others should know: The dovetail clamp screws tighten via threads on vertical posts. Those posts stripped on me very easily.
Things I liked: Consistent accuracy. Good Power. Lightweight. Smooth firing. Smooth cocking. Most of the sound is redirected away from the prey and back into the shooter.
Things I would have changed: I would get the royal version if I had it to do again in hopes of a better stock.
What others should know: Great bargain for the money