I just got in my costal lrt 308 can an its 5/8 -24 an its a k baffle. does someone make a adpater in go from 1/2-28 (ar-15 5.56) to the 5/8-24?? an i have ben told that the 5.56 could mess up the 308 can is that true or is that the guy just tryin to sell another can? has anybody ever done this an it worked out? thanks