Check out Advanced Armament stuff.
I've got a Remington 700 that I had threaded and attached an AAC muzzle brake/51t mount. That with a can is a great setup. Fun to shoot/ quiet.
The suppressor that mounts to it is an AAC SDN-6, and it's the "ratchet mount" like you mentioned. A few quick turns and it's mounted up solid, then when you take it off there's still a muzzle brake that TOTALLY tames the rifle.
Additionally- the SDN-6 will mount to their 5.56 mounts so you can put it on any AR platform too, including .300 blk. Nothing but good things to say about mine (if you didn't catch that already).