Looking at getting a mini-red dot but I don't know much about them.
All I know are there are a ton of them. They all look the same and I imagine do about the same thing.
Burris Fastfire II- $210
Pride Fowler- $390
TNVC RDPII- $140
Seems I can get any of these mounted on a picatinny rail, and LRT has a riser mount for any of them. What's the difference between the $140 TNVC and the $425 Doctor?
I had a Docter Optics MRD.
Great little optic, sold it to my friend to put on his Leupold scope...
Its made of aircraft grade alluminum and stainless steel, with glass lenses, rather than the Jpoint (or its copies) that are plastic and acrylic lenses.
The docter sight also has the similar lens setup as aimpoint, with 2 lenses sammiched together. 1 diffraction lense, 1 reflection lense, and all the coatings are in between to protect them.
The docter sight also NEVER turns off. In its "sleep" mode (with dot as dark as it can go) you can still see it in night time, or indoor lighting. It also doesn't flash like some of them do. With the cover on, it will last for 5 years or so (the battery). The Docter sight will withstand up to 1000 G's of acceleration (just an FYI, the G3 rifle's bolt only accelerates with 700 G's), so you can put it directly on the slide of a handgun.
Think of it like an Aimpoint (the docter) versus a decent Tasco scope. You get what you pay for with quality of the glass, and materials.