What is the smallest, lightest locking carabiner you know of?
I know the lightest carabiner is the Camp Nano at 1oz = 28g http://tinyurl.com/2e5um5: I think you are on the right track with the Trango, I looked around and couldn’t find anything lighter than 41g. I don’t know what application you are using it for but there is also the 3mm Titanium Quick link by Berkeley point http://tinyurl.