That is a 60 round scope at best. When I first got my rifle (.308), I bought one of these (6-24) from the sportsmans guide. The only good thing about the whole deal was that SG has a no questions refund option. (If someone really feels the need to try one, I would get it from them. www.sportsmanguide.com)
After about 45 rounds, it would no longer focus or adjust parallex above 12 power. After 52 rounds, 8 power. I got a second one in exchange until I had the money for my IOR. It did exactly the same thing. Different magnification if I remember right, but the same exact behavior.
The only way I would buy one of these would be to ship it to Juba. That would be supporting our troops.