Aperture sight for picatinny rail

[Magoo]

I'm looking for an aperture sight to mount on a picatinny rail. I want windage and elevation adjustment. I'd like it to be as low/short as possible. Two apertures would be nice, but not necessary. Flip up-ability is not a requirement, though it seems pretty standard. This will be mounted on a .22LR, so it doesn't have to be magnum caliber rifle proof either.

Of course I want a quality, robust unit yet don't want to break the bank. Looking around I find lots of choices from $30 to $160+. Just an hour or so of searching lead me to this: http://www.gilbertsguns.com/AR+15+Accessories/Sights/UTG+Rear+Picatinny+Rail+Adjustable+Iron+Sight

Any units you guys have experience with, positive or negative?

While I'm at it I may as well ask about the front sight I've picked out. It has to be removeable for when I chose to put the scope on and this is the only option I've found- the NDS-23: http://www.nodakspud.com/NDS-22.htm.

 

[rbernie]

The unit you linked to is for AR15s, and will be positioned very high off the bore axis as a result. If you want a traditional lower mount, there are a few options but not many. I have used a NECG rear apeture sight on a Weaver rail in the past, and while it's pricey it's also very well made.

 

[Magoo]

Yeah, all of the rear sights I was finding made me think I was going to have to use a flagpole for the front insert .

Is the peep on the sight you linked through the front, knurled knob? If the one with a hole is the peep and the other is to mount it to the rail, where are the adjustments? Thanks for your help, this one is much lower than any I found.

Edit- found a better picture on Midway's sight and it makes sense now. Looks like a good option, but hopefully another, cheaper, option is out there.

 

[Magoo]

How terrible of an idea is this-

Buy a picatinny rail cover and install the peep onto it. This one (http://troyind.com/ /battlerails/troy-rail-cover-full-length-individual) reads like it might lock down tight enough to be a solid base.