Drilling replacement sight blanks

[jcf1]

Hi all, being scouring the net looking for a stockist for blank or sized front beads and/or rear pop-up leaf sights for my drilling. Does anyone know of a source? My front sight seems to be the long dovetail type as below:

IMG_20160331_083422.jpgIMG_20160331_083356.jpg

I'd rather keep the more original look and get a pearl bead as per the pic.

[jcf1]

Strike that! Found one in the UK. For anyone else - Recknagel does the relevant front beads in various sizes - 1100-2045 in the catalogue:

http://www.alanrhone.com/images/reck...e-8-04-web.pdf