1. Footprint Compatibility Overview

Before we jump into deeper footprint knowledge, let’s start with the most practical part — which footprint matches which mainstream industry standard.
Here’s a quick compatibility map for easy reference:

• MOJ Footprint — Compatible with RMR® pattern

• MGT Footprint — Compatible with RMSc / SMS standard

• VOD Footprint — Compatible with ACRO® footprint

• RUM Footprint — Compatible with T-1™ / T-2™ micro-dot pattern

• GIN Footprint — Compatible with C-More® RTS / STS

• TEK Footprint — Compatible with Docter / Noblex® mounting standard

These patterns cover almost all major red dot naming systems used in the market today. We also offer a SDM (Slide Direct Mount) pattern for our direct-mount red dots designed for specific pistol platforms, with no adapter plater required.

1.1 Universal Adapter Options

Before diving into the specific footprint knowledge, I would love to introduce some universal adapters for your convenience. 

SCFRM-21 Universal Adapter, 

Designed for CZ 75 Shadow®, CZ 75 SP-01® and CZ P-10 C®, compatible with Frenzy MOJ/ MGT/ GIN/ TEK footprint red dot sights.

SCFRM-29 Universal 45° Offset Red Dot Sight Mount 

Designed for picatinny rail, compatible with Frenzy MOJ/ MGT/ GIN/ TEK footprint red dot sights.

SCFRM-GK10 2-in-1 MOJ / MGT Footprint Universal Dovetail Adapter Mount

Designed for firearm & airsoft Glock® , compatible with Frenzy MOJ/ MGT footprint red dot sights.

SCFRM-GK11 4-in-1 MOJ / MGT / TEK / GIN Footprint Universal Dovetail Adapter Mount

Designed for firearm & airsoft Glock® , compatible with Frenzy MOJ/ MGT/ GIN/ TEK footprint red dot sights.

SCFRM-30 2-in-1 MOJ / MGT / TEK / GIN Footprint Universal Dovetail Mount

Designed for dovetail rail, compatible with Frenzy MOJ/ MGT/ GIN/ TEK footprint red dot sights.

These adapters help you bridge different mounting standards when switching firearms or optics.

1.2 Why Footprints Exist & How They Work

Before introducing the footprint, we would love to share a fun fact about Vector Optics. We use alchohol acroynms to name after them.

(Vector Optics' Footprint Naming System)

Just in case, some people might be curious about why there is footprint and what is its purpose. Red dot sights were originally developed for pistols, so their width is usually matched to the pistol slide—neither too wide nor too narrow. The length of the sight is determined by its optical design, and the sockets in the footprint keep the sight locked in place under recoil.

You may notice a special footprint (VOD) doesn't have sockets, I would explain why later in the article. The bolts are for set screws, ensuring a tight and secure connection between the red dot and the adapter plate.

With the basics covered, let’s dive into each footprint and break down what makes them different.

2. MOJ Footprint

Dimension: 45.3mm x 29.5mm / 1.78 inch x 1.16 inch

Pattern: Two sockets at the front side for the pins on the red dot, two screw holes in the middle.

Compatable with: RMR®

Our red dot sights with MOJ footprint: 

• Frenzy FLEX 1x19x28 GenII Titanium Red Dot Sight(SCRD-T64)

• Frenzy FLEX 1x24x29 GenII 6MOA Red Dot Sight(SCRD-76)

• Frenzy FLEX 1x22x26 MOS Red Dot Sight(SCRD-36)

• Frenzy-X FLEX 1x22x26 MOS Multi Reticle Pistol Red Dot Sight(SCRD-M36)

• Frenzy FLEX 1x22x26 AUT Red Dot Sight Auto Light Sensor(SCRD-37)

• Frenzy FLEX 1x22x26 AUT Red Dot Sight FDE(SCRD-59)

• VictOptics SRD 1x20x25 Pistol Red Dot Sight EDC (RDSL33)

• V3 1X17X26 RED DOT SIGHT 3.5 MOA With Auto-Off Feature (RDSL25)

Plates for pistol: SCRDM-08 (GLOCK®)

Mounts for rifle: SCRA-71 (for weaver rail on rifle, MOJ footprint red dot, mount riser), SCFRM-02 (for picatinny rail on rifle, MOJ footprint red dot, offset)

3. MGT Footprint

Dimension: 41mm x 25mm / 1.61 inch x 0.98 inch

Pattern: Four sockets at each corner, two bolts in the middle.

Compatable with: RMSc/SMS

Characteristic: It is similar as the TEK footprint but in a compact size. MGT is the smallest footprint which usually applys to mini red dot sights.

Our red dot sight with MGT footprint: 

• Frenzy-S FM 1x17x24 MIC Pistol Red Dot Sight(SCRD-43)

• Frenzy-S FA 1x17x21 GenII Red Dot Sight(SCRD-73)

• Frenzy-S FM 1x17x24 MOS Pistol Red Dot(SCRD-M43)

• Frenzy-S FLEX 1x19x28 Red Dot Sight(SCRD-66)

• Frenzy-S FA 1x17x20 Red Dot Sight Aspheric Lens EDC(SCRD-68)

• Frenzy FA 1x17x20 Red Dot Sight MRT Aspheric Lens EDC(SCRD-M68)

• Frenzy-S FM 1x17x24 AUT Reflex Sight FDE(SCRD-53)

• Frenzy-S FM 1x17x24 AUT Reflex Sight Gold Plated(SCRD-55)

• Victoptics C1 4×32 Prism Scope (OPSL40)

• VictOptics SRD 1x16x20 Compact Red Dot Sight (RDSL32)

Adapter Plates for Pistol: SCRDM-09 (GLOCK®), SCFRM-16 (MOS to MGT, adapter for GLOCK® with standard MOS), SCFRM-19 (HK® SFP9)

Mounts for rifle: SCRA-73 (for weaver rail on rifle, mount riser), SCFRM-11 (for weaver rail on rifle, cantilever style mount), SCFRM-03 (for picatinny rail on rifle, offset mount).

4. VOD Footprint

Dimension: 50mm x 30mm / 1.97 inch x 1.18 inch

Pattern: No sockets or bolt, a cut in the middle for a recoil stopper.

Compatable with: ACRO®

Characteristic: This one is special with no sockets or bolts. It is kind of like a variant of weaver rail. You will need one screw to connect the red dot and the adapter from the bottom side of the red dot. This footprint usually applys to enclosed red dot sight, which you have no place to screw in from the upper side.

Our red dot sight with VOD footprint: 

• Frenzy FA 1x18x22 Enclosed Red Dot Sight(SCRD-75)

• Frenzy Plus F3 1x18x20 Enclosed Sight Solar Power Multi-Reticle(SCRD-SM63)

• Frenzy Plus F3 1x18x20 Enclosed Reflex Sight(SCRD-63)

• VictOptics SRD 1x18x20 VOD Red Dot Sight (SKU: RDSL34)

Plates: SCRDM-10 (GLOCK®), SCFRM-18 (CZ SHADOW® 2), SCFRM-20 (HK® SFP9)

Adapters: SCFRM-12 (MOS-VOD), SCFRM-13 (MOJ-VOD)

Mounts: SCFRM-14 (for weaver rail, low mount), SCFRM-15 (for weaver rail, riser mount), SCFRM-17 (for dovetail rail, low mount)

5. RUM Footprint

Dimension: 53mm x 22mm / 2.09 inch x 0.87 inch

Pattern: A cut in the middle, two screw holes on both sides

Compatable with: T-1™/T-2™

Characteristic: This one was also developed for tube sight, which could be applied on rifle.

Adapters: N/A

Mounts: SCPSM-01 (for picatinny rail, cantilever mount), SCPSM-02 (for picatinny rail, low mount)

Our red dot sight with RUM footprint: 

• Maverick GenII series

• Maverick GenIII series

• Maverick GenIV series

• Scrapper series

• Paragon Mini Prism series

• Centurion 1x20 Red Dot Sight(SCRD-33)

• SRD 1×20 Reflex Sight Graphite Finish (RDSL27)

• SRD 1×20 Reflex Sight (RDSL28)

6. GIN Footprint

Dimension: 52mm x 27mm / 2.05 inch x 1.06 inch

Pattern: Four bolts, two at the front side are smaller than those at the back side

Compatable with: C-More® RTS/STS

Characteristic: This footprint has the biggest dimension. Usually the red dot with GIN footprint is designed for IPSC (The International Practical Shooting Confederation) matches. It would realize the biggest window to provide good field of view. It sometimes also applied on the rifle.

Adapters: N/A

Our red dot sight with GIN footprint: 

• Frenzy Plus F3 1x22x32 Quick Release Red Dot Sight(SCRD-65)

• Frenzy Plus F3 1x22x32 Red Dot Sight Solar Power(SCRD-SM44)

• Frenzy FLEX 6MOA Red Dot Sight(SCRD-79)

7. TEK Footprint

Dimension: 46mm x 28mm / 1.81 inch x 1.1 inch

Pattern: two screw holes in the middle, four sockets at each corner to fit the pin on the red dot sight.

Compatable with: Docter/Noblex® mounting standard

Our red dot sights with TEK footprint: 

• Frenzy FM 1x17x24 Red Dot Sight(SCRD-19II)

• Frenzy FM 1x17x24 Red Dot Sight Coyote FDE(SCRD-F19II)

• Frenzy FM 1x17x24 Pistol Green Dot Sight(SCRD-G19II)

• Frenzy FM 1x20x28 3 MOA Red Dot Sight(SCRD-35)

• Frenzy FM 1x20x28 6 MOA Red Dot Sight(SCRD-40)

• SPX V3 1X22 Red Dot Sight Weaver (RDSL16)

• SPX V3 1x17x23 Dovetail Red Dot Sight 3.5 MOA Reflex Sight (RDSL18)

Plates for pistol: SCRDM-01 (GLOCK®), SCRDM-02 (M1911), SCRDM-03 (P226), SCRDM-04 (BERETTA® 92), SCRDM-05 (Springfield XD®), SCRDM-06 (S&W M&P®), SCRDM-07 (HK® USP)

As depicted below, the back sides of the adapters vary to accommodate different pistols, with plugs designed to fit into rear sight slots of various sizes.

Mounts for rifle: SCRA-67 (for weaver rail on rifle, mount riser), SCFRM-01 (for picatinny rail on rifle, offset), SCFRM-04 (for dovetail rail on rifle, mount base)

8. SDM (Slide Direct Mount)

SDM (Slide Direct Mount) red dot sights are designed for specific pistol platforms. Red dot sights with the SDM pattern attach straight to the slide without the need for an adapter plate.

SDM red dot sights:

Frenzy FA 1x16x21 Standard MOS Red Dot Sight (SCRD-81)

Frenzy FA 1x20x24 CZ® P-10 / Shadow 2 OR Red Dot Sight (SCRD-82)

Frenzy FA 1x16x24 Walther® PDP Red Dot Sight (SCRD-83)

9. Red Dot Mounting Guides

Now that we’ve covered the different footprints and how they relate to mainstream mounting standards, the next step is putting everything into practice. Installing a red dot can look a little different depending on whether you’re setting it up on a rifle or a pistol, so we’ve prepared two step-by-step guides to walk you through the process. Choose the one that fits your setup below. And you can check the illustration at the bottom.

1. How to install a red dot sight on pistol?

2. How to install a red dot sight on rifle?

When setting up your red dot on a rifle, having the right mount height and footprint makes a big difference. The VAS™ system offers three mount with different center heights (1.5in / 38mm, 1.93in / 49mm, 2.26in / 57mm) and interchangeable footprint plates, letting you fine-tune your setup without swapping mounts. Learn more in our VAS™ Series introduction.