Very durable and well machined. Original clamping feedneck.
The CCM Clamping Feedneck is the original, and the best clamping feedneck in my opinion.
The No Rise angel threaded feedneck is noted as not allowing breach to open, and is mainly designed for Cocker Style markes that have Angel feedneck threads. There are however some Angels that will allow the breach to open with the No Rise on, such as the IR3 Fly.
This is a great product and a great upgrade for any marker.