Dealing With a Lost Holosun 507k Battery Tray Screw

If you've ever sat down at your workbench to swap the power source in your optic and watched your holosun 507k battery tray screw bounce off the table and vanish into the carpet, you know that immediate feeling of pure frustration. It's a tiny piece of hardware, probably no bigger than a grain of rice, but without it, your high-tech red dot is basically a very expensive paperweight. I've been there, crawling around with a flashlight and a magnet, wondering why on earth these things have to be so incredibly small. ...

April 23, 2026 · 6 min · Flikstein Papa