The added weight of the suppressor has absolutely NOTHING to do with the accuracy of the rifle/barrel...
Don't really know about adapters but i run the suppressor with the quick detach (YHM) and there has been absolutely NO difference in accuracy with it on or off, although the POI will shift but always repeats when it is put back on...
The last one i just done has a .700 barrel and its threaded 5/8x24 for the YHM QD...
IMO... if you want to run it on all your rifles i would opt for the QD system which is superior IMO than the direct thread for repeatability... Thats JMO though.
