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Not so long back, we wrote about 2 new red dots that share the Shield RMSc footprint.

As it is obvious from the footprint name alone, the original footprint was designed by British manufacturer Shield. It was first used on Shiled SMS, but somehow the name RMSx got attached (it is another red dot from Shield manufacturer, but it was developed much later after the Shield SMS which first used that very footprint).

You can find the article here – it is about two popular red dots from Osight and its differences.

This article is about Shield RMSx, and the common problems that customers experience with it.

The dots blicks

The most common error on Shield RMSx is that the dot is not working properly. That is – it blicks as you shoot.

This error is a tricky one, because some Shield red dots had this issue in part also, but back then it was an installation error.

You see, Shield red dots often use battery from the bottom. That brings with it the necessity to use the buffers (included in the red dot package) so that the battery does not move while shooting.

Some shooters never installed those buffers, and as a result the dot was blicking.

That is unfortunately not the case with the Shield RMSx error. The blicking is a construction error and cannot be solved by adding buffers.

What is the difference between these two red dots? Because the reticle is the same.

Main difference: type of emitter

The key difference between Osight K and Osight SE 6 MOA is the position of the emitter. Osight K uses open emitter. Osight SE uses enclosed emitter.

What is emitter you ask? Emitter is something that you do not necessarily know about much. To put it short, you need to know two things:

#1 Emitter is basically the source of the red dot that you see when you aim. It is the device that projects the dot to the glass.

#2 Red dots use one of these two types of emitters: open emitter and enclosed emitter.

If the emitter is open, you can make it dirty or damage it, if you are handling the red dot roughly. As a result, the dot can become blurred.

If the emitter is closed, it is protected by glass. The red dot then however becomes more robust, because it needs to have glass from the front and from the rear – to protect the emitter, and to have a glass where to project the red dot.