Haven't installed it yet. It seems fairly well constructed though there's a slide switch on the back of the red dot that appears very unsealed - like something you'd find on a piece of indoor electronics, not a field weather protected switch. The other switches are very difficult to turn, so assume they have an o-ring.
The windage adjustment is sealed, you just turn it on the outside - no locking feature. The elevation adjustment has a cap and a screw inside to adjust, the cap has an o-ring. This difference is unusual.
The scope is illuminated and the battery access is on the left, on top of the on/off/strength turret. The manual says it comes pre-installed - it does not. The red dot battery is under the red dot (a common configuration) and you have to take it off it's mount to insert/replace the battery.
The manual also says the red dot is mounted on a picatinny/weaver rail and comes off the tube mount which encircles the scope in the back half - it does not. I'm not sure how it comes off, if at all. There's supposed to be a thumb nut to remove it, this is missing on the red dot.
It appears this is designed by an engineer with no shooting experience, and no shooting consultant to advise on the design. I need to put the batteries in and see if it all works. If so, then try it on the intended rifle (Ruger 10/22 carbine). If it all works, I'll probably keep it anyway because it was $70 and I don't intend to stress it durability wise. If any issues, I will return for mo...
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