No scoffing here. I've had UTG's quad rail on my Colt 6721 for years and have found it to be as strong as anybody elses. I also have one of their 4-16X50 scopes on my FAL. It started out as an experiment to see if the rifle was accurate enough for expensive glass. It's staying on til it breaks-if it ever does, as I'm quite taken by it's quality, something I really didn't expect.Scoff if you will for my mounting a $40 scope on a $1000+ rifle but it works for me.