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The Viper is worth every penny. Installed on a G17, came almost zeroed which I was very surprised at. Looks great and is the perfect size. I can even see myself putting it on one of my AR's or even my Vector. Reticle is not hazy (it's hard to find an affordable red dot that doesn't have much of a halo effect). I am very happy with this purchase. I am just not sure what modifications OP made! Always been curious. Anyways, I highly recommend!
This is a great slide upgrade for my G17. It looks great especially with a silver barrel, the groves are perfectly placed for good manipulation of the slide front and back, and my vortex viper fits perfectly on it. No slack or slide of the sight. I also really like the rounded edges not really found on a Gen3. Not so 'boxy"! I highly recommend.
I purchased this sight for my Kriss Vector, thinking it was a simple red dot, fair price, and good reviews. Well, not so much. Any brightness past "can barely see the dot" was terrible. As it got brighter, there were red lines everywhere. Did I get a broken one? Not sure. Checked everything, still lines, and "red" everywhere. It's hard to explain, but the reticle view was not clear. Oh, and its not Parallax free. Not in the least bit. Bad, bad, bad.
Got my Vector in Alpine White, wanted to give it a nice black/white two tone. Went to Kris’s site to purchase this stock, no luck. Came to OP and not only was it in stock, it was at a better price!! Glad I could keep everything on my rifle OEM! Now for a nice red dot.... :D