Ruger 10/22 Peep Sights

While searching for Tech-SIGHTS reviews, I found an article on 10/22 peep sights from someone who prefers an alternative:

So the recipe for my favorite final setup is as follows:

• Williams FP-AG-TK Receiver Sight (sold with adj. knobs now)
• Lyman Globe Sights: #17ATC @ .852″ height,”
• Williams Aperture 3/8″ Diameter with .050 aperture
• Weaver T0-9 top mount base ( one piece tip-off base )

Of course, this combination costs way more than the Tech-SIGHTS. I'd like to see what NDS comes up with for the Ruger receiver.