CADtec3D Sight
CADtec3D Sight
Fibre Optic Shotgun Sight SGS-100 Mk1
CADtec3D Sight ~ professionally built with 3 special attributes!
~ CADtec3D Sights will solve your cross eye dominance issue instantly!
~ Fibre Optic Shotgun Sights that ensure you have an effective gun mount, and consequently improves your aim!
~ These Fibre Optic Shotgun Sights will never fall of your Vent Rib like some can and do!
How does this CADtec3D Sight solve cross eye dominance?
To answer that question, it is necessary to briefly explain what cross eye dominance is. Before I continue, the assumption is you have both eyes open. If you close an eye to ensure you have proper EYE + BEAD + TARGET line of sight you have cured your cross eye dominance but have created another massive problem that I will explain in detail later. So most left-handed people tend to mount a rifle on their left shoulder and similarly, most right-handed people tend to mount a rifle on there right shoulder. If you are right-handed and right eye dominant you don’t have a problem. If you are left-handed and left eye dominant you don’t have a problem. Why? Because the eye nearest to the shoulder the rifle is mounted on is doing the alignment of EYE + BEAD + TARGET. The image below shows that everything is naturally in-line.
1st illustration
If you are cross eye dominant, the eye nearest to the shoulder the rifle is mounted on is NOT doing the alignment of EYE + BEAD + TARGET. The 2nd illustration below shows a right-handed shooter with rifle mounted on right shoulder but left eye dominant. The reason this is a problem is that the alignment is being done by the LEFT eye + BEAD + TARGET.
2nd illustration
The above image is not to scale and the error down range is far more severe than depicted. Why is the LEFT eye doing the alignment and not the right eye? When you look at an object with both eyes open, you see two images. One image from each eye. The Brain ignores one of the images! It only register's the image seen by the dominant eye. As far as the shooters is concerned, the BEAD + TARGET are all in line and assumes that when you pull the trigger, what is in line is what gets shot. Clearly, as shown in the 2nd illustration, the gun is looking at a totally different line of sight. To force the scenario of the 1st illustration, we must make it impossible to see the bead with the "wrong" eye. The image below shows the fibre optic buried deep inside the sight body. You can only see the fibre optic from these vent rib shotgun sights if you look axially into the body. The eye nearest the shoulder the gun is mounted is the only eye that can look axially into the fibre optic shotgun sight, the other eye is prevented from viewing the fibre optic by the body of the Sight.
It doesn't matter if you are Left or Right eye dominant, you only see the Fibre Optic from the correct eye, and that is the eye nearest to the gun! The complete opposite happens if you mount your gun on the other shoulder! The CADtec3D Sight is ambidextrous!
Many shooters are aware they are cross eye dominant and to try to solve the problem by closing one eye. As mentioned earlier, this caused another massive problem. What that does is to ensure the EYE + BEAD + TARGET was all in line as it should be, BUT they are now without the ability to judge distance and speed having lost the phenomenon of stereoscopic vision. Shooting a moving target requires two MUST HAVE attributes: A) The ability to judge distance, B) The ability to judge speed. There is only one way you can achieve both those attributes and that is to shoot with both eyes open. The error at range is considerable if you are not aware you are cross eye dominant. Assuming the Bead is 650 mm from your eye (at the end of the barrel) and your left eye is 64 mm from your right eye, that subtends an angle of error of 5.5 degrees. At a range of 30 Metres, this equates to an error of 2.9 Metres (114"). So, if you know you are cross eye dominant, and you want to keep your stereoscopic vision, the SGS-100 Fibre Optic Shotgun Sights sold here is the answer!
How does this CADtec3D Sight ensure you have a good gun mount (alignment)?
First of all, let me show you why a standard bead does not ensure you have a good gun mount and plays no part what so ever in aiming, or aligning your Eye, Bead , Target and Gun Barrel Axis.
The Brass Bead can be seen all the time, from any angle, even when the Bead is superimposed on the Target. The condition has bean met in the image below, but the back end of the gun can be anywhere whilst the Eye, Bead and Target are aligned. The brain perceives that the barrel is looking at what the eye is looking at but clearly it is not. This is why a rifle has a front and rear Sight so the Axis of the barrel can be co aligned with you line of Sight.
This is how the CADtec3D Sight ensures you have a good gun mount (alignment)?
The SGS-100 Fibre Optic Shotgun Sights works like a Front and Rear Sight, but in a single body. The fibre optic is viewed from deep inside a 5 mm diameter tube. If you view the fibre optic off axis the fibre optic can't be seen. It's a bit like a now you see it, now you don't if you are miss aligned.
If you can see the Red or Green fibre optic you know that what the disc of light is superimposed on, the axis of the shotgun barrel will be coincident with it. That's because everything is coaxial. The fibre optic is coaxial with the body of the Sight, the Sight is coaxial with the shotgun barrel.
You position your gun until you see the full circle of light from inside the body of the Sight. You are always aware of your Alignment condition ~ Re-Adjusting is instant ~ You are always in control. Knowing you are "aligned" or "misaligned" is immediately obvious to you using the SGS-100 Fibre Optic Shotgun Sights. There is a visual difference from perfect alignment to a small rotation (off axis rotation). Perfectly aligned shows a full circle of light. Off axis and the circle changes to an ever-diminishing ellipse (please see illustration below).
Also, as the shape changes from a circle to an ellipse, the image will get darker. The human eye can detect a mere 1% in light intensity so that attribute has been harnessed.
It is said that you don't need a rear sight on a shotgun because your eye is the rear sight! Well that works if your eye is in the correct position: (That's what is referred to as a perfect gun mount). But you will only know if your eye was in the perfect position AFTER you shoot! You can NEVER know for sure BEFORE you shoot, and then it's too late! If you have been shooting for a considerable time, only have a front bead, cross eye dominant and never consistently hit targets, this is probably the reason why.
Why won't these CADtec3D Sights ever fall off your vent rib?
Unlike some designs, these SGS-100 Fibre Optic Shotgun Sights will not fall off your vent rib. We know this an issue with many Sights available.
In the image below, notice the screws are at a 10-degree angle such that the Fibre Optic Shotgun Sight body is captivated on the vent rib. Many Sight designs try to put the screws against the rib at 90 degrees relying on friction which does not work as the screws have to "dig in" to work. As the shotgun's vent rib is very tough compared to the screws, the screws will never "dig in". The result is, in a short space of time, the sight will fall off. But NOT the SGS-100 Fibre Optic Shotgun Sights. No force is needed against the vent rib, just a slight touch and the Sight is locked in place. The 10-degree angle of the screw takes care of that. The screw lock insert (see section below) stops it vibrating loose.
Q. But what if the screw/s come loose?
We now fit every Sight with special Stainless Steel Heli-Coil Screw-Lock Inserts. These inserts have a resilient locking mechanism that grips the screw, preventing it from vibrating loose due to the shock seen during firing. Most shooters leave their Sights permanently attached to the vent rib but if you do disassemble the Sight there is no need to apply Thread Locker anymore!
How does it work? You will see from the image below that the central coil (shown coloured silver) has “straight” segments or “chords”. When the screw enters, these chords flex outwards creating pressure on the screw preventing it from unwinding.
Fiber Optic Shotgun Sights functionality:
# Fits to Vent Ribs ranging from 6 to 12 mm (0.24" to 0.47") wide with No Gunsmithing required to fit at all.
Our recommended way of using this CADtec3D Sight
Mount your gun and hard focus on your Sight, positioning your gun until you see a “full circle of Red or Green light” to ascertain your gun alignment. Now, do not hard focus on your Sight. Hard focus on your Target, or at the distance you know the target will be. This is critical. You only need to be "AWARE" of the disc of light in your “SECONDARY” vision. "BOTH EYES" must be open all the time. Focusing on Target then Sight repetitively causes eye fatigue as the eye muscles are constantly working to change focus. Also, you will lose your stereoscopic vision just when you need it if you are hard focusing on the sight just when you need to pull the trigger!
Stereoscopic vision (also known as Binocular vision) give you the ability to judge speed and distance which is an imperative attribute you need to consistently hit moving targets. It only works when both eyes are open! Our vent rib shotgun sights will allow you to harness this phenomenon.
If within 30 days of purchase you are unhappy for whatever reason simply return it, undamaged and we will refund your money 100% no questions asked!
Please note, a shipping charge based on your location will be added at checkout. You will be able to track the progress of the shipment in transit.
No Gun smithing required to fit your Sight.
If you have any questions at all, feel free to call or email us using the contact info at the very top of the page. We will get back to you as soon as we can!
Even if you decide not to purchase, thank you for your interest from the CADtec3D team.
