I bought this swivel stud mount about a month ago to secure a light to my rifle, and it works flawlessly!
I bought both this swivel stud mount and the Phoebus barrel gun mount to be used in combination with my pocket sized 18650 flash light (same diameter as many CR123 lights). I wasn't sure as to which mount was better and decided to buy both (the Phoebus is junk).
This swivel stud mount attaches to my ruger 10/22 carbine AND heavy barreled rifle very securely and i have no fear of anything falling off (the Phoebus will not securely attach my flashlight to the carbine, and won't fit over a heavy barrel).
Because the swivel stud mount is plastic i don't worry about it scratching my barrels. (the Phoebus mount is a coated metal and if it attached securely enough for me to use it i would worry about minor metal on metal contact.
Because it is held together with a simple thumb stud i am able to attach and de-attach my flashlight very easily allowing me to keep my light in my pocket throughout my daily activities and attach it to my gun when I need it (the Phoebus requires and allen wrench).
Bverall, I bought both mounts because i wanted the best one and after comparing them the swivel stud is many times better.
Pros: works!
Cons: NA
This review was written in the old system and had content requirements that are different than reviews written today.