Mammut

Classic HMS Twistlock Plus Carabiner

Works as expected. Smooth operation, as expected from mammut products.

Solid HMS Biner, gate is able to manipulated with one hand which is nice.

Solid Locker

Easy action on the twist lock. No nonsense product, works perfectly for quick on/off with my Grigri. No complaints.

Twist lock is quicker than a screw to secure but still easy to see when fastened. Did the job, nothing really to complain about

Safe, but annoying

This carabiner does a great job of securely locking without being able to open accidentally. However the push-down and twist action feels very clumsy to use. An up-wards and twist action would be better. But if all your looking for is a carabiner that is reliable and you don't have to worry about, this may be a good option. There are other triple action twist lock biners out there that perform better.

Solid Carabiner

Nothing too much to say about this other than that it's a solid carabiner. Took me a few tries to unlock/lock it comfortably with one hand.

Works as expected, used with belay device and belay loop, auto-locks closed

This three action carabiner work very well and is really secure.I use this one for belaying with my grigri.

Simple triple action mechanism. Hasn't iced up like Black Diamond magnet ones

Had to Clean

This is a nice carabiner. The only issue I've had is that I've had to clean it and re-lubricate it after about a year. Besides this, I like this product. It's easy to use and I've had no problems getting used to its functionality.