Yeah my first AR I decided to put a magpul grip on it before taking it to the range. Whipped the crappy grip off and then opened the box to get out the new one, glanced at the instructions, noticed a warning to be sure to capture the safety detent and spring. Wtf, there was a spring in there? I didn’t even see which direction it headed in my cluttered disaster of a workshop. Quick google search and I discovered the flint spring in a bic lighter could be used in a pinch so that’s what I used.