The muzzle tip/threadpitch is listed under each product in the "More Information" section! Here is a full list.
Caliber
Muzzle TP
AR15 - .223/5.56
1/2 x 28
AR15 - .224 Valkyrie
1/2 x 28
AR15 - .300 Blackout
5/8 x 24
AR15...