Poor materials and design - HIPERFIRE HIPERSWITCH 60 Degree Ambidextrous Safety Selector, 2-Lever Set for AR-15/10

I used the supplied Allen key and almost immediately the set screw began to strip... the plastic selector is okay but not on the same quality as Magpul which costs less. I think the only redeeming feature is the compatibility with hiperfire triggers which can be finicky with other ambi safety selectors.

Wouldn’t buy again and I tried to seek out support for the part from the manufacturer but they mostly care about the triggers and not the accessories.