Things I liked: auto-centering design works well. quick and easy to install.
Things I liked: consistent, sturdy, good power, easy to cock
Things I would have changed: fiber optic sights were off beyond range of adjustment. If I hadn't planned to scope I would have sent it back. trigger is terrible.
What others should know: potentially a terrific pistol. with minor improvements it would be worth twice the price. as it is, it's a toy.