Ade Advanced Optics Optics Delrin Shims 1.0 Degree for Vortex Venom & Viper, ADE RD3-006, RD3-009, RD3-012, RD3-013, RD3-015,Crimson Trace CTS -1250, Insight , Docter, Meopta, Sightmark, Burris Fastfire II, III,Red dot Sight

I have many firearms with red dots, including a number of Vortex Venoms. I sent my Glock 21 slide to be milled for another Vortex Venom. When it arrived back to me, the fitment onto the slide seemed very precise. However, I could not lower the elevation to closer than about 55 MOA from POA / POI. I was trying to imagine how I could resolve this without either sending my slide back for re-milling and waiting another 4-6 weeks, or should I remove one of my other well-zeroed Venoms from its host to check the incline of the milling on my slide. I racked my brain to figure out how I could securely shim the Venom on my G21. That's when I, on a whim< entered "venom Red Dot Shim" into Amazon's search. VOILA! This product popped up. I just mounted it to check, then blue Loctited it. It is now perfectly zeroed. Granted, my elevation adjustment is maxed out, but it IS perfectly zeroed. I will know in a month or so if it holds that adjustment, but I see no overt reason why it will not! HIGHLY recommend!

I purchased one of the FNX-45 tactical models that came with the Vortex Venom as a package deal. No matter what I did, I could not get the red dot even close to Zero. I maxed out my "UP" adjustment and was still consistently 7 inches low of my target. Not knowing exactly what was wrong, I watched a video suggesting one of these shims as a solution instead of having my slide milled some more. Well, purchased one shim, and it fit perfectly, installed easily, and I was able to reduce my "UP" adjustment way down, and still have much room for fine tuning either direction now. If you have this same red dot problem with your FNX-45, this is the most practical solution instead of getting more milling on your slide. Not sure why FN doesn't include one of these shims with all of their guns with a red dot mount cut-out. I see I am not the first person who has had this problem with one of their guns.

If you have an optic that has maxed out it's elevation this is a perfect solution to allow you to zero out your optic.

So I originally bought the Venom for my Mossberg 590, since it came with a Picatinny/side saddle attachment but unfortunately the sight did not adjust enough, and shot placement was low, even at max settings. This shim fit perfectly on the mount that came with the optic, no modifications needed, and functioned exactly as described. I haven’t had a chance to take it out yet, but it does fit well, and appears to line the sight window up slightly better than without it. Will see in a week when I have a chance to take it out. But for a stock vortex venom, it fits.

After a few weeks of researching shims I decided on this one. I was pleasantly surprised with how it bolted on my pistol. Everything lined up perfectly and I am well pleased with the product.

It was what I needed to add some elevation to my red dot. Good price.

I added this to my Ruger-57 with a Vortex Venom red dot. I immediately fixed the problem with not being able to adjust the dot far enough down.

At first I was disappointed. They never stated the shim was made of plastic and then when I went to put it on my vortex venom mounting plate the holes didn’t match up. So I had to modify it. I was not happy but when I took the gun to the range. I was able to zero it in and the gun ran fine. So I guess it’s ok and hopefully it holds up

I ordered the wrong shim for my beeds this time but the other one was the fix. Worked great

I fought with red dots for months trying and trying to zero and stay zero'd. These give a good solid base and just enough elevation to get any site zero'd.

Shim works as advertised, the alignment holes for the B 1 mount are a little off but fixable......