1/2-28
by any chance is the FVSR 1/2" UNF threading on the barrel??
tpi is threads per inch
and yes you are correct, a 1/2-20 tpi will not fit on a 1/2-28 tpi.
Couple rf's, couple cf's, and 1 12g.
Everything I once held dear
I count it all as lost
ty for helping a newbie out:)
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