biodsl Wrote:My threads are .575" from muzzle to shoulder. BTF's 3 prong flash hider is 2.25". I get 1.675" Math aside, my Lilja measures 16" bolt face to muzzle. With BTF's flash hider it measures 17 11/16.
Wrapping my numb nuts around this, barrel 14.5 oa less threads .575 = 13.925 to the shoulder. Flash hider 2.25 less threads .575+/- = 1.675, which leaves me with 15.6, granted this does not account for the use of shims or crush washer which could possibly tighten the numbers up a bit but is still a starting difference of .4+ short and that would be a lot of shims. Both the barrel and FH overlap each other, what am I missing here?
I wouldn't use a cw on a pin and weld to start.
ETA: as to not wanting to make an additional post, thanks biodsl I was stuck in a double over lap of the male and female parts as the FH picks up were the the shoulder stops.