Great iron sights when they don't arrived screw up from the factory - SIG SAUER Flip Up Iron Sight Set

These are great iron sights but, thru no fault of Optics Planet, they arrived screwed up. Out of the unopened package, the rear sight was racked hard right, to the point that it could not be adjusted back to center. Optics Planet provided a free return and replacement, so I can't say enough about their good service and customer service. I CAN'T say the same for Sig. Since they've gotten so big and become "everything to everybody", I've had several problems with some of their products. This sight for one, another was a threaded barrel that I could not get the cap off of without damaging it. I sent it back to Sig and 6 weeks later they returned it with the cap removed, only they'd put a cap for a different barrel back in the package. Another six week delay and I get it back again, this time AGAIN so tight that I couldn't get the cap off. Mr Vise fixed that problem. Their customer service and certain products really suck, but their suppressors are sweet!!!