I have them on four muzzleloaders. They are inexpensive for sure, but appear to have good glass. Also they do gather light well. I use the 4x32mm and the 2.5x20 on rifles. For hunting in the woods where I do, 50 yards being a normal shot or less, I like the scope. I am going to throw one on my TK2000 shotgun and see if I can shake it apart.