Wanted: SIG 522 barrel wrench

[Oracle]

Anyone out there still have the original barrel nut wrench that SIG supplied with certain models of their now discontinued SIG 522. Believe the originals dimensions being a 1” C spanner with 3/16th pin.
Many thanks

 

[Benj7]

I seem to recall an American how-to page where he made his own, as the original was a bit soft! I think he ground down another C spanner.