Hello,
I want to install a bead sight on an older Rem 870 WM plain barrel. The original bead sight flew out of barrel during firing. The barrel has through hole in the barrel that is not threaded. Remington replaced the original bead about 10 years ago.
According to Remington, the barrel uses a .146 x 48 bead sight.
Would this size require an oversize tap for threading or just the 6-48 tap?
Thanks!