Originally Posted by R3L
I don't know, but they fit on Evil Pipe backs.
They do not fit on Lapco/Hammer7 barrels, the thread is too fine (on the C-Series.)
im hoping i can work on it tonight....
but have a ton on the list to do (freak bore, midblock, decorative milling, reg testers, asa's for the hammer7/trracer)