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Posted: 12/6/2006 5:08:29 PM EDT
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I've seen a lot of questions about how to replace a pinned FSB and I ran across a pretty good how to article on another site. Pretty much shows step by step and list some tools ect...Hope this helps someone. Heres the linkCLICK HERE |
Welcome!  Thank's for sharing.  For an illustrated guide, check this out. Assemble your own LOWER, UPPER, FREE FLOAT, TRIGGER, GAS BLOCK |
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Good info, Now what I'd really like to know is how to install a new FSB on to a new undrilled barrel. How do you insure that the FSB is perfectly vertical and how do you keep it in place during drilling? Any jigs available that would make this a relatively painless process? |
I've done quite a few new sight bases on new undrilled barrels. To get it straight up and down I center my rear sight. I tap the hole under the sling swivel on the fsb for a set screw. I go to the range and zero the windage on the rifle by tilting the fsb left or right. After zeroing I drill the pilot holes through the fsb/barrel. A mill or a drill press will work. Just make sure the barrel is secure in a vice. After drilling ream the holes by hand with a taper pin reamer. Once the taper pins are installed remove the set screw. It's easy. As with any pinned barrel the fsb/barrel are now a matched pair. |
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