ar15 lightning link auto sear automatic sear selector automatic switch and slide modification required

hope everyone will give us feedback on the kit, so we will improve the quality. thank you. the product is exactly what you saw in the picture and descriped in the details .there maybe tiny color differentces owing to the light , please understand it we gurantee the quality for 1 month ,offer our assistance to fix repair it or exchange for new ones or partial refund to make you satisfied the product are produced in china with better price level and almost same quality as the original ones we are alwasy here ready to offer our service to you .any problems , please feel to leave us messages or talk online.syi