I launched a HK MP5 F model firing pin spring, these are braided wire and pricey, across the garage. I saw the direction it flew but never found it. Fast forward 3 years and found the sucker in one of my boots.
Two weeks ago I was assembling a Radian Talon ambi selector and launched one of its retainer pins as I slid the lever onto the axle. Had to cannibalize a spare selector kit to finish. The very next day I tore apart the guide rod out of an AK and as I was reassembling the spring & guide rod I once again sent a part into orbit. This time it was the retainer that fits on the end of the recoil spring. So now I'm crawling around on my hands and knees searching for this damn retainer and I find the Radian pin from the day before, COOL, but I'm still looking for that damn AK spring retainer.