Have 4 of them, all 3-9x40's. They are the best cheap scopes I've ever had. Lowlight performance is excellent, superb considering the price, as good or better than some "higher-end" scopes. I dial them up and down for longer range shooting quite a bit, 0 to 700yds and they stay on track so far. Glass etched reticles. They're weakest link would be the turret screws, they will strip out if tightened to much, and are kinda pre-stripped out from the get go. I applied alot of light duty loctite to help fill in the threads on all mine, which seems to have build up some tightness to the allen screws, which fit really wobbly prior, like the threaded holes were oversized to begin with.