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me too. On my match builds I ordered Douglas heavy barrels with the flats milled for the front sight post, and they also have a dimple under the gas port. Additionally I threaded the lower hole for a...

Yes. Although I cheated by looking up the sight height and radius rather than going back down to the shop to measure myself.


AR's are even worse with their high sight post. I think the tolerance...

I was way wrong. It's nothing at all.
Sight height spec is 0.728 - 0.005
Sight radius is 29.5
So 20 minutes rotation gives 0.0042 lateral displacement of the front sight
This gives a downrange...

The spot in the book I was referencing isn't about timing for sight alignment, it was referring to achieving proper torque. Whenever I install a used barrel, I always use the bench vise first - level...

I sat down last night to continue adding to my own shop notes. After a few double takes and head scratching, I sent the following letter to Heritage Gun Books, publisher of the Kuhnhausen-VSP shop...