Corners cut on minor parts quality. questionsble overall build quality. - Radical Firearms Complete Upper Assembly 7.5 inch 5.56 M4 Contour, A2 Flash Hider, w/BCG and CH

On first arrival upper appeared well built. Unit was very dry. Fit and function non-firing seemed good.

Took hand guard off via 3 screws to swap flash hider out. One screw stuck a little didn’t think much of it. Other 2 screws came out fine. Putting unit back together noticed threads came off of one screw and stripped out the screw hole. Other two screws then stripped on the head and now none of the three can be removed or advanced. Garbage quality screws soured me on upper. Returning for a different brand.