I find these to be kind of intriguing. A bubba mod that isn't permanent and looks to fit the part of an original sight if you didn't know better.http://magwedge.com/products/rifle-accessories/raveneye-sks-peep-sight/
They look to be identical to a standard sight blade, but with the peep instead of the notch. While lacking any adjustment for windage, these look leaps and bounds better than the Williams peep sight. The Mojo peep is considerably more robust than the Williams, and is adjustable...and five bucks cheaper than the Magwedge....but the Magwedge looks like it belongs on the gun more than the former.
Granted, none of these give the advantage of a longer sight radius as the Tech Sights do, but those are so awkward and contrary to what an SKS is supposed to look like. Like part of a grenade launching sight that is missing...something. They kind of remind me of the spare tire hump in old Lincoln Continental trunk lids.
Removing chunks of wood isn't very appealing to many either. Pretty much any stock you install them onto is junk if you decide they don't work for you, or you decide to sell and want to return to original. Sure you could add to the expenditure and get a spare stock...but it isn't exactly economical.
I haven't got visceral knowledge of either the Magwedge or Mojo peeps....but would like to hear other's experiences if there are any. It seems a pretty penny for either...but as my eyes age, a more viable option for irons seems to be in the near future for me.
I had forgotten about the Mojo sight, and for some reason thought it no longer was being made. Seeing this Magwedge sight makes me consider kicking the William's to the curb for a more traditional looking sight....it is only a backup iron on a scoped rifle, so it has been pretty low priority...but these new peeps look kind of....nice.
All in all, by a visual inspection alone, I gotta give kudos to the Canadians for giving a resurgence in the aftermarket SKS accessories. It is neat to see new ideas like this come up again.