I had the 4-12 A/O "Sweet 17" model on my HMR. Same scope, fancy turrets with BDC. Anyway, the scope was decent enough for what it costs.....Optics were decent, was a little "dark" at 12X, and the A/O was sensitive....but it tracked consistantly, and got the job done. Would I put one on anything other than a rimfire? Nope. But it worked OK for the .17.
Ryan