Don't know - Meprolight Micro Red Dot Sight Kit with Quick Detach Adaptor and Backup Day/Night Sights 1x22.5mm 3 MOA Dot

I have ordered then reordered twice along with talking with five different customers service reps.Tracking shows each time package makes it to Chicago then sent back to the seller without reason from eather.Now i set and wait for a refund.The reason i needed this is over. That being said for what I've read and talked to others it's a good tool.