Things I liked: Just what I've been looking for.
Things I would have changed: Include wrench to remove locking screw.
What others should know: All 3/8" rails on my air rifles have rounded crowns, The UTG 3/8" slot is flat and an "iffy" fit.
Things I liked: If the whole batch was a good as the best half these would be really good.
Things I would have changed: Improve quality control.
What others should know: Size seems to be highly variable. I can feel obvious differences when seating the pellets. The looser fits even tumble and hit the target sideways. The tighter fits are very accurate.
Things I liked: Having shot my old Chrony, It's comforting to have some protection availablefor its relacement
Things I would have changed: More standoff in front, provision to mount from the bottom. Use a different material that is transparent to the LED lights from the lighting attachment.
What others should know: Only usable outdoors. The plastic material blocks the light from the LED lighting attachment indoors.