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Posted: 12/9/2006 8:20:14 AM EDT
| After lots of hammering and cussing, I finally removed the old front sight off my AR-15. I wanted to change it because the old one didn't have the bayonet lug on it, and personally, the rifle kinda of looks ugly without it. Got a new one with the lug and now I need to drill the taper pin holes. Anyone have any suggestions, besides going to a gunsmith, on how to drill these things out? Any tips, pointers, anything that might make it a bit easier? |
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Since the barrel and the front sight base are individual drilled on every barrel, there is no set pattern to either the taper pins hole locations in it, nor the slots in the barrel for it. Just short of creating a FSB Jig to find the location/angle of the holes on a mill, drilling the New FSB to match the old one is going to be a chore. P.S. Welcome to the site!!! |
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Mill, with an adjustable vise. 1/2 mold made that fits the old FSB and the New one as well. Mold clamped up in the vise, old FSB clamped into the mold, then the vise moved/angled until the taper pin channel is found on the old unit, then the New FSB swapped and drilled. As for the standard size taper pins, don't chance it and lathe a new slight oversize set of taper pins. The reason for his is once you have the New FSB in the correct alignment (jig's) on the barrel, you are going to ream the FSB holes and the barrel slots slightly. This insures that the FSB is indexed with the barrel extension pin; the FSB is going to be solid on the barrel. Or, just break out the welder and fill in the old Barrel slots/ turn the welds down to the correct diameter, then with the FSB jig'd up with the barrel extension, drill the FSB holes/barrel slots for the standard taper pins. Or fill the old barrel channels, mill flats in the barrel and turn the whole thing into an adjustable FSB type system. Simply, installing a FSB correctly is not a hand tool kind of this, and if this is your plan, your not going to be happy with the end results. |
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