Hi
Today I have checked one(4-16X44 SF) if is usable for hft. Picture is good , clarity and resolution are good (better then other China scopes) but they suffer from massive parallax error.
I have set sf to 25 and at 45 yards, when i moved my head, I was easily going out of 40mm kill without any indication from scope.
For plinking or hunting, if you adjust sf, they good. One advice, go for as plain cross as possible.
Personally I wouldn't buy one coz 1. Warranty 2.Price.
Cheers.