I've read the posts concerning flash hiders and muzzle breaks. I know the 6.8 barrels have a 5/8" by 24 tpi pattern. All I need to know is if it is a right or left hand pattern? Also, has anyone tried the Yankee Hill Phantom flash hider with this caliber? I have one on my FAL an dlike it very much, but am considering a Smith Vortex or PWS for my 6.8 XCR. Thanks.