'76 Duster build thread or something...
Tried googling, and what little I could find on the actual thread size suggested 1/2x20, so I went with that... Funny, 1/2x20 is the size for most AK muzzle brakes (though, left-hand thread)! :glasses7:
Also, bolt pattern is 5x4.5... Not sure if that's bbp or sbp...
Thanks,
- CK