I think your best option would be to have your muzzle threaded 5/8-24 with a end cap to protect the threads. If you want a break or a suppressor it's very easy to add one at that point. There are many high quality screw on breaks and some are QD type that match with the same brand Suppressor. I shoot a surefire QD break on a few of my rigs which allows me to shoot my Surefire Can on any of them if I wish. I'm in the process of building a 6.5 PRC and am doing exactly this. On my 6.5 PRC I will using the YHM QD break and will have the option of adding my new YHM Resonator if I so desire. Just my take for what it's worth. Gives you numerous options by just getting the barrel threaded.
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