Shield standard Footprint

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Handgun Red Dot Sights

Rifle Reflex Dot Sights

The reason Shield needed to invent their own footprint is because Shield sights are remarkably compact. This footprint is designed in a similar way as the Noblex/Docter footprint (there being two holes for the screws and four sockets for the notches on the mount/adapter, one in every corner). The sockets, though, are a tad broader and closer together with each other.

Shield-Sight

A modification of the Shield standard

Holosun 407K and Holosun 507K feature a modified Shield footprint. The dissimilarities are:

missing two rear sockets
shallower sockets in the front

As a result, it is a requirement for some pistols that are optic ready for Shield footprint to be modified for the 407 and 507K. That is, the two rear indexing lugs on the pistol need to be taken away and the two front indexing lugs reduced in height. Instances of these pistols are Hellcat and Walther PPS. However, some pistols, like Sig Sauer P365XL, do not need to be modified.

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Vector Optics Frenzy-S 1x17x24 MIC

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Ade Advanced Optics RD3-018 Micro Red Dot

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General description

Most reflex red dot sights are of the open type, meaning that the light-emitting diode (LED) and the interior of the objective lens are exposed to the elements. Only a few red dot sights in this category have these two parts sealed (Steiner MRS, Holosun 512, etc.)

The objective lens is curved so that the beam emitted by the LED can reflect the user's eye in front of the device regardless of its position. The coatings applied to the lens reflect only the colour of the emitted beam, all the other colours pass through the lens. The most common colour is, of course, red. Nevertheless, some companies have started manufacturing green and gold dot sight because many people have problems seeing the red colour.

Holosun Reflex HS407C-RD V2

Holosun Reflex HS407C-RD V2 reflex sight

Reflex dot sight is parallax free. The majority of them are small and compact (some reflex dot sights designed for AR-platforms are bigger and bulkier). There are all sorts of mounting footprints when it comes to this category. The most popular is Docter/Noblex footprint profile. More information about the footprints on the red dot sight is available here.

Handgun reflex sights

These red dot sights must be small and compact so that they fit on a handgun. Pistol users generally prefer bigger dot projections (6 MOA –7 MOA) as it allows for quick target acquisition. These sights can also be used on rifles, but most rifle users opt for smaller dot projections (2 MOA –3.5 MOA). Handgun reflex sight withstands powerful recoil. Some modern pistols are designed so that a particular red dot sight footprint matches the mounting surface of the pistol perfectly (they are optic-ready).

Rifle reflex sights

Even though some reflex sights can be used on handguns and rifles, rifle-oriented reflex sight is generally bigger. They are equipped with a large objective lens and often supplied with a Picatinny mount.

Dot size

The dot size in reflex sight is associated with the field of use. Dot sizes 1 MOA –4 MOA are great for rifles as they provide more accuracy at distances up to 75 m. Dot sizes 4 MOA–10 MOA are a perfect choice for pistols since they allow the shooter to acquire the target faster. They provide sufficient accuracy at a distance of up to 40 m.

What is a reflex sight good for?

All dot sights operate at around 1x magnification. For this reason, the user can look through with both eyes open which add to the comfort and simplicity of use. Even though the shooter is looking through the lens, he or she remains aware of the surroundings (the peripheral vision is not affected). Reflex sight boasts unlimited eye relief and unlimited eye box (the dot is always on target as long as you see it, regardless of the eye position, allowing for quick target acquisition. In comparison to tube dot sight, reflex dot sight generally provides a less obstructed field of view (the frame around the lens is thinner).

What is the difference between a reflex sight and a red dot?

Every reflex sight is a red dot (or a green dot, or a gold dot, depends on the colour of the emitted beam) – reflex sight is a subcategory of a red dot. Most people, however, think about tube sight when they hear the term 'red dot'.

The differences between reflex sights and tube sights

Tube sight has enclosed housings, reflex sight is typical of the open type (even though there are some exceptions).
The frame around the objective lens is thicker with tube sight.
The reflex sight is typically smaller and lighter (even though there are some exceptions, for example, Holosun 512 models).
Tube sight comes almost exclusively with a round-shaped lens whereas reflex sight mostly comes with a rectangular-shaped lens.
Tube sight is not used on pistols as they are too big.
Tube sight is more suitable for harsh weather conditions (with the reflex sight of the open type, water, dust, or other particles can get in between the diode and the lens).

At what distances are reflex sights still accurate?

That depends on the dot size. Reflex sight designed for rifle use (1 MOA –4 MOA dot size) provides considerable accuracy up to 75 m.

Reflex sight designed for pistol use (4 MOA –10 MOA dot size) is accurate at up to 40 m. The accuracy is increased if the dot is paired with a magnifier.

Shield standard Footprint

Sub Categories

A modification of the Shield standard

Shield Mini Sight SMS

Leupold DeltaPoint Pro

Vector Optics Frenzy-S 1x17x24 MIC

Vector Optics Frenzy-S 1x17x24 MIC FDE

Vector Optics Frenzy-S 1x16x22 AUT

Ade Advanced Optics RD3-018 Micro Red Dot

VIDEO

General description

Handgun reflex sights

Rifle reflex sights

Dot size

What is a reflex sight good for?

What is the difference between a reflex sight and a red dot?

The differences between reflex sights and tube sights

At what distances are reflex sights still accurate?

Most Popular Reflex sights

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Shield standard Footprint

Sub Categories

A modification of the Shield standard

VIDEO

General description

Handgun reflex sights

Rifle reflex sights

Dot size

What is a reflex sight good for?

What is the difference between a reflex sight and a red dot?

The differences between reflex sights and tube sights

At what distances are reflex sights still accurate?

Most Popular Reflex sights

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