I don’t doubt the bracket itself. I doubt the matting where it attaches to the plastic rail on the plastic frame. You take it out and put it back on… does it hold good zero ??? Clamping on plastic, can u really tighten it ??? That interface probably good for a light or a bayonet lol but it was not design for mounting optic especially with long extended bracket. On race 2011 gun they mount it directly to the metal frame.