NcStar AR BAYONET LUG BIPOD QUICK RELEASE (ABAB)

I bought this and couldn't wait to try it out. When I recieved it I initially thought it looked nice and heavy, and I thought it would work well. I found out I was very wrong when I tried to attach it to my AR. Supposedly this thing is supposed to mount on the bayonet lug. It does so very poorly. It barely attaches and you will be lucky for it to stay on for any amount of time. It hardly locks in, I tried numerous times but it just doesn't work. It seems like it should be too simple to make this work, yet they managed to make a bad product.