Purchased Barska Electro sight with multi-reticle in March.
I mounted this on my Remington 870 and sighted it using a laser boresighter. For the most part, it is a fantastic buy for the money. It mounted easily to the rail, a and sighted easy. It made my target a lot easier to see - especially since I could keep both eyes open. The brightness switch worked great, and in low light the #1 setting was perfect. In sunlight, I had no trouble seeing the reticle on #4. The sight has 4 different reticle settings, a 3 & 6 MOA dot, a 3 MOA dot in a circle and a cross. When switching between reticles, you have to be careful that that you get the switch lined up. The stops on the switch are mushy at best. You can feel the centers of the stops, they just aren't as positive as they should be.
Once set, the sight held zero quite well, even after removing and remounting. I fed the 870 2.75" 00 Buck, 3" 00 Buck, Remington Rifled 1 oz slugs and Winchester Super X 1 oz slugs. It wasn't until the Win super X (1600+ fps) that I encountered a problem. After about 6 rounds, I noticed I couldn't see the reticle. The reason was that the lens was sitting on the shooting bench. I was able to superglue the lens & retainer back in, but haven't tried it since the repair.
Inexpensive red dot for most small bore firearms, paint markers and air-soft
Held zero well, until it failed
Fits picatinny rails
Cannot withstand the recoil of large bore firearms
Metric screws and adj...