Yes you can. If you go with the AAC can you can buy AAC flash hiders and install them on the guns, the just rachet the can on to the brake/ flash hider. AAC 762sdn6 for example
There are several companies that make QD 30 caliber suppressors. AAC and Surefire are the two big ones that come to mind. Put a suppressor mounting muzzle device on both rifles and you can switch the can over in a matter of seconds.
If you go with AAC it is a 51 tooth flash hider. Each company has there respective flash hiders. The only cans that can be mounted to other companies flash hiders are the Silencerco Saker line. They have a removable back piece that can be changed to mount on AAC's mounts, YHM's mounts and of course silencerco's mounts. Also it can be changed to be direct thread. The Saker 5.56 is the only one available right now but the 762 should be available come 2nd quarter. I have some on order and that is what I have been told.