Where can I find instructions for drilling and reaming an FSB and new barrel for taper pins?  Especially maintaining index during machining.

Quoted: Where can I find instructions for drilling and reaming an FSB and new barrel for taper pins?  Especially maintaining index during machining.

I've done it a few times, but using dowel pins instead of taper pins.  What I did was tap the hole under where the sling swivel mounts, and installed a set screw.  I took it out to the range, shot it and adjusted it until my rear sight was perfectly centered, then took it home and drilled it using a standard drill press and vise and installed the pins.  It was actually really simple.  The set screw held it in place enough that it didn't move when I drilled, and I didn't even disassemble the upper.

The important thing, if you use a dowel pin, is to use a drill bit that's about .001" undersize.  Like I had 1/8" dowel pins, I had the drill bit ground .001" so the pins fit tight.  Otherwise, they'll be loose.  Guess how I found that out.    Taper pins, you'll need a taper pin reamer.

Thank you very much, sir!

Quoted: Thank you very much, sir!

No problem, IM me if you have any other questions.  The set screw method works really well, and I just leave it in place.  You can install the sling swivel and not even notice it, unless you know it's there and look for it.  I might have a few extra around if you need one, I use short 8-32 ones I think they were.