Saw these on eBay and haven't seen them anywhere else, look real cool and high quality sights, wonder how much better they'd work than standard vz58 iron sights. The fibreoptic fibres are actually a mm or two away from the actual notch and I wonder how that effects the sight picture. The price is a bit much though;
http://www.ebay.ca/itm/VZ58-SA58-Side-adjustable-fiber-optic-rear-sight-green-/122172650294?hash=item1c720eb336:g:8KYAAOSwZQRYXiEs
http://www.ebay.ca/itm/VZ58-SA58-Side-adjustable-fiber-optic-rear-sight-green-/122172650294?hash=item1c720eb336:g:8KYAAOSwZQRYXiEs