PSA Flip-up Sights: Loose?

[kylednf]

I ordered a set of the PSA flip up sights about a week ago and have read mixed reviews. A lot of people are finding it hard to securely tighten the sights to the rail. There is still not a lot of info on these sights but I only paid $69 plus shipping so we will see. I guess you get what you pay for. We will see tomorrow when I get the sights in.
Anyone have these and have problems with them or are they G2G?
-Kyle

[kylednf]

Follow up.
I got the sights in. I stripped one of the screws trying to tighten them to the rail.
You really need to torque them down as tight as possible so they won't move.
I'd say they aren't worth your money. Better off getting a set of magpuls MBUS sights if you're looking for a set of BUIS for cheap.
I'll be taking a trip to the hardware store tomorrow to find a new screw.