Artem B.wrote a review of CAMP USA Nano 22 Carabiner on April 23, 2018
Familiarity: I've put it through the wringer
I did the math: for a typical trad rack (40-50 non lockers) I shaved off over a pound going from 36g carabiners to these.
Have yet to find a fault with these, I'll let you know if/when I do...
Light, cheap and available in many colors... what more could you ask for?