I was at the range (April 2025) when the battery tray, battery, and battery tray screw popped out of my EPS Carry Red Dot. I found anll of the red dot components except the battery tray screw. I called and emailed Holosun for a replacement, however they had slow and disinterested customer service representatives (took me multiple follow up emails to get them to do their job). I immediately purchased the replacement screws from Freedom Gorilla and they arrived quickly and worked perfectly. They just needed some thread lock. Holosun’s backup screw arrived 12 days AFTER Freedom Gorilla’s screws. I definitely recommend people give Freedom Gorilla a try as I was skeptical at first (small unknown website) but ended up being impressed by their product.