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Quoted: I thought the Bayo lugs were on the front site post/gas block. Shouldn't be too difficult to just install a new one of those. Right?
-K
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Not as easy as it might seem.
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Actually pretty hard, unless you have access to precision milling equipment, then it actually gets somewhat easy.
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Please explain. I obviously have alot to learn here. I was under the impression that they were more or less removeable. Thanks!
-K
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During the barrel manufacturing process, the barrel and FSB are drilled and reamed as a unit. There is no standard position for these holes to be drilled and reamed, therefore there is very little chance of a FSB from one barrel matching up with the existing holes in another barrel.
Additionally, new FSBs come undrilled, meaning you have to find the exact spot on the barrel where the old FSB was drilled and drill the new FSB in the exact same spot. Missing the right spot could result in a severly canted FSB, one in which your rear sight can't adjust for.
That's where precision equipment comes into play. If you have a mill with a DRO (digital read out), you can chuck up your barrel and find the exact center of the old taper pin holes. Now you can reassemble the old barrel with the new FSB and drill and ream with confidence that you are in the correct spot.
Doing this process blind is not something I would recommend or even try. A couple people here have been successful doing it other ways, but I wouldn't recommend it unless you are mechanically inclined, detail oriented and patient.