I really wanted to like this, I had never used one before and didn't know it won't work for some people. I shoot with my right eye and that is the worst, my left eye is slightly better. I tried shooting with my left eye but still see more than one dot in the center. I tried shooting/using the brightest dot but just couldn't make it work for me. If you want it for a GK1 I can make it a package deal with the after market adapter. GK1 not included 
I have all the original packaging, literature, screws and tools that came with it. I never registered for the warranty so you can do that. I'll let the two items go for $275 including shipping to the lower 48. Paypal friends or buyer pays fee.
I have all the original packaging, literature, screws and tools that came with it. I never registered for the warranty so you can do that. I'll let the two items go for $275 including shipping to the lower 48. Paypal friends or buyer pays fee.