Good optic for the money - Holosun HS510C 1x0.91-1.2in Open Reflex Red Dot Sight

On 12/31/25, bought this site for my new Ruger 10/22 model 31222 .22 cal rifle which was designed with no iron sites but had a factory installed picatinny rail; hence, gotta get an optic. Showed up from OP in a cardboard shipping box and with no damage or defects.

This optic had quality build, no defects in the optic, great fit and finish, easy mount to the rail (see instruction book to adjust the rail locking mechanism); all functions worked (3 different reticals and brightness); the 2 adjusting buttons gave a good tactile 'silent click'; no defects in the glass. However, since I have astigmatism, the edges of the pinpoint dot are a touch frayed but not enough to distract from use.

As anticipated, the comb on my stock was way too low. So, next purchase was a comb rising kit from Beartooth from Amazon; from that kit I stacked 2 of the kits foam risers (5/8" and 1/2") and that put my line of site to the middle of the optic.

Next, used an Aimshot .22 cal laser in the barrel to get a preliminary zero in the site. Took quite a few clicks on elevation and windage to achieve zero but not a problem for the optic - had a good range of adjustment. Will go to the range and live fire to finish zeroing. Happy Camper.