Things I liked:Small and easily mounted to a back stop. Things I would have changed:I'd make it a heavier gauge steel and specify on the box, the max FPS that can be used. What others should know:I bought this from a brick and mortar store, not PA. The box didn't list and FPS limitations, so I set it up to use it with my .177 Gamo Whisper (just getting broken in). Within about 100 shots using pellets ranging from 7.56 gn to 10.65 gn, I had destroyed the deflector and put a large enough dimple in the back to prevent me from removing it from my back stop. Definitely don't use it above 800 FPS. Four days and it's toast.