Cheap red dot/green dot.

26 for the site, 15 for the rail. I bought another one for my .22

CVLIFE 1X22X33 Red Green Dot Gun Sight Scope Reflex Sight with 20mm Rail https://www.amazon.com/dp/B00A36MKUO/ref=cm_sw_r_apan_glt_i_1X3307JY35QZXBAWCV82



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Looks the same to me. Open sights are kind of fuzzy to me due to age, this is not. If it is the same, the windage adjustment has a little locking screw on the other side. They send a little allen wrench for it. Unlock it before adjusting windage. Mine was unlocked when I got it, but I could see it causing a problem if trying to adjust while locked.
 
I recently did this same experiment, but with an ADE model RD3-002 Red Dot Sight with Weaver-Picatinny Mount for $45.00 off eBay and factory direct. I was happy with the purchase/experiment as well. Buy one of those $20.00 red laser sights in front of the reflect sight and you will be amazed at the results. They compliment the accuracy each other at the zero range, and the laser makes easy work of perfectly zeroing any red dot or scope.