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Questions & Answers
Does it fit M18 without modifications? Manufacturer Answer

The Defender-ST would be a compatible option with your M18, as the slide is cut to otherwise accept the DeltaPoint Pro footprint, employed by the Defender!

by Vortex, Manufacturer, May 29, 2024
Will this fit a Hellcat Pro OSP? Manufacturer Answer

Unfortunately no. The Hellcat would work with the Defender-CCW, however, and it would be a direct-to-slide fit, otherwise!

by Vortex, Manufacturer, May 29, 2024
Customer Reviews
Helpful Positive Review Great optic by Jay, Verified Owner, June 4, 2025
I have a few Vortex optics and Optics Planet always has what I need to finish my firearms the way I like them done.Besides that you just can’t beat the Vortex warranty…
2/2 found this helpful
Helpful Positive Review Great optic by Jay, Verified Owner, June 4, 2025
I have a few Vortex optics and Optics Planet always has what I need to finish my firearms the way I like them done.Besides that you just can’t beat the Vortex warranty…
1/1 found this helpful
Helpful Positive Review Solid budget optic by Frank, Verified Owner, June 1, 2025
Easy to mount on pic rail for a shotgun. A bit cumbersome adjustment but was able to zero it in.
2/2 found this helpful
Helpful Positive Review Great unit by Jeffb, Verified Owner, July 4, 2025
Got this to go on a ruger 22/45 compact screwed right on the picattany rail looks great . Turns on and off easily bright dot. Great value.
2/2 found this helpful
Helpful Positive Review Good dot for shotgun by James Bass, Verified Owner, July 9, 2025
I bought this for a shotgun not a pistol. So the larger moa dot is perfect. Mounting is straight forward and it works well, besides I’m a vortex fan mainly because their customer service is second to none if something does fail.
2/2 found this helpful
Helpful Positive Review Love the Dot by Biker Mike, August 24, 2016
I purchased this Vortex Viper for my new Walther PPQ-Q5. It fit using the Plate for the Doctor Red Dot. It was easy to site in and it is right on the money. At 70 ft. rapid fire I had a group of ten rounds in about 4 to 5 inches. Great for me. I'm th...
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31/37 found this helpful
Read All 551 Reviews
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Product Info for Vortex Viper 1x24mm Reflex Red Dot Sight

These Vortex Viper Red Dot Sights feature bright red 6 MOA reticles for clear targeting in any light levels or background colors. These Red Dot Sights from Vortex Optics have easy to use power and illumination controls on the left side so you can make adjustments without changing your sighting position.Vortex Viper Red Dot Sights mount exceptionally low, so they are a great choice for handguns with cutout slides.image

WARNING: California`s Proposition 65

Specifications for Vortex Viper 1x24mm Reflex Red Dot Sight:

Manufacturer: Vortex
Fabric/Material: Aluminum Alloy Chassis
Magnification: 1 x
Objective Lens Diameter: 24 mm
Reticle: 6 MOA Dot
Illumination Type: LED
Illumination Color: Red
Brightness Settings: 10
Eye Relief: Unlimited
Adjustment Type: MOA
Adjustment Click Value: 1 MOA
Parallax: Parallax Free
Lens Material: Glass
Optical Coating: Fully Multi-Coated
Battery Type: CR2032
Battery Quantity: 1
Battery Life: 150 - 30000 hours
Operating Temperature: 22 - 122 Fahrenheit
Water Resistance Level: Waterproof
Water Resistant Mark: 1 m
Shockproof: Yes
Length: 1.8 in
Height: 1.02 in
Weight: 1.1 oz
Condition: New
Package Type: Box
Magnification Type: Fixed
Lens Finish: ArmorTek
Brightness Index: 10
Mount Type: Weaver
Gun Type: Pistol, Rifle, Shotgun
Attachment Type: Picatinny, Weaver
Front Sight Color: Red
W/E Travel at 100 Yds: 120 MOA

Features of Vortex Viper 1x24mm Reflex Red Dot Sight:

  • Fully Multi-Coated
  • Unlimited Eye Relief
  • Parallax Free
  • Single-Piece Chassis
  • Waterproof
  • Shockproof
  • Hard Anondized Finish
  • ArmorTek

Package Contents:

  • Vortex Viper 1x24mm Reflex Red Dot Sight

Vortex Viper 1x24mm Reflex Red Dot Sight Orderable Models

List of Orderable Models

Vortex Viper 1x24mm, 6 MOA Red Dot Sight CR2032 Battery, Black, VRD-6 , MPN: VRD-6 , UPC: 875874006027 , Code: VX-RD-VRD-6-VRD-6
Vortex OPMOD Viper 1x24mm 6 MOA Red Dot Sight, FDE , MPN: VRD-6-OP-KIT3 , Code: VX-RD-VRD-6-VRD-6-OP-KIT3
OP Exclusive - Vortex OPMOD Viper 1x24mm 6 MOA Red Dot Sight, FDE , MPN: VRD-6-OP-KIT2023 , Code: VX-RD-VRD-6-VRD-6-OP-KIT2023
Vortex Viper 1x24mm 6 MOA Red Dot Sight, Black, Viper Red Dot and TRYBE Defense Pistol Slide, Glock 17, Gen 5, Viper Cut, Version 2, Black Cerakote , MPN: VRD-6-KIT4 , Code: VX-RD-VRD-6-VRD-6-KIT4
Vortex Viper 1x24mm 6 MOA Red Dot Sight, Black, Viper Red Dot and TRYBE Defense Pistol Slide, Glock 26, Gen 3/4, Viper Cut, Version 2, Black Cerakote , MPN: VRD-6-KIT8 , Code: VX-RD-VRD-6-VRD-6-KIT8
Vortex Viper 1x24mm 6 MOA Red Dot Sight, Black, Viper Red Dot and TRYBE Defense Pistol Slide, Glock 17, Gen 4, Viper Cut, Version 2, Black Cerakote , MPN: VRD-6-KIT3 , Code: VX-RD-VRD-6-VRD-6-KIT3
Vortex Viper 1x24mm 6 MOA Red Dot Sight, FDE, Viper Red Dot and TRYBE Defense Pistol Slide, Glock 19, Gen 5, Viper Cut, Version 2, FDE Cerakote , MPN: VRD-6-OP-KIT3-KIT6 , Code: VX-RD-VRD-6-VRD-6-OP-KIT9
Vortex Viper 1x24mm 6 MOA Red Dot Sight, FDE, Viper Red Dot and TRYBE Defense Pistol Slide, Glock 19, Gen 4, Viper Cut, Version 2, FDE Cerakote , MPN: VRD-6-OP-KIT3-KIT5 , Code: VX-RD-VRD-6-VRD-6-OP-KIT8
Vortex Viper 1x24mm 6 MOA Red Dot Sight, FDE, Viper Red Dot and TRYBE Defense Pistol Slide, Glock 19, Gen 3, Viper Cut, Version 2, FDE Cerakote , MPN: VRD-6-OP-KIT3-KIT4 , Code: VX-RD-VRD-6-VRD-6-OP-KIT7
Vortex Viper 1x24mm 6 MOA Red Dot Sight, FDE, Viper Red Dot and TRYBE Defense Pistol Slide, Glock 26, Gen 3/4, Viper Cut, Version 2, FDE Cerakote , MPN: VRD-6-OP-KIT3-KIT7 , Code: VX-RD-VRD-6-VRD-6-OP-KIT10
Vortex Viper 1x24mm 6 MOA Red Dot Sight, FDE, Viper Red Dot and TRYBE Defense Pistol Slide, Glock 17, Gen 5, Viper Cut, Version 2, FDE Cerakote , MPN: VRD-6-OP-KIT3-KIT3 , Code: VX-RD-VRD-6-VRD-6-OP-KIT6
Vortex Viper 1x24mm 6 MOA Red Dot Sight, FDE, Viper Red Dot and TRYBE Defense Pistol Slide, Glock 17, Gen 4, Viper Cut, Version 2, FDE Cerakote , MPN: VRD-6-OP-KIT3-KIT2 , Code: VX-RD-VRD-6-VRD-6-OP-KIT5
Vortex Viper 1x24mm 6 MOA Red Dot Sight with Vortex Micro 3x Magnifier , MPN: VRD-6-KIT2 , Code: VX-RD-VRD-6-VRD-6-KIT2
Vortex Viper 1x24mm 6 MOA Red Dot Sight, Black, Viper Red Dot and TRYBE Defense Pistol Slide, Glock 17, Gen 3, Viper Cut, Version 2, Black Cerakote , MPN: VRD-6-KIT10 , Code: VX-RD-VRD-6-VRD-6-KIT10
Vortex Viper 1x24mm 6 MOA Red Dot Sight, Black, Viper Red Dot and TRYBE Defense Pistol Slide, Glock 19, Gen 4, Viper Cut, Version 2, Black Cerakote , MPN: VRD-6-KIT6 , Code: VX-RD-VRD-6-VRD-6-KIT6
Vortex Viper 1x24mm 6 MOA Red Dot Sight, Black, Viper Red Dot and TRYBE Defense Pistol Slide, Glock 19, Gen 5, Viper Cut, Version 2, Black Cerakote , MPN: VRD-6-KIT7 , Code: VX-RD-VRD-6-VRD-6-KIT7
Vortex Viper 1x24mm 6 MOA Red Dot Sight, FDE, Viper Red Dot and TRYBE Defense Pistol Slide, Glock 17, Gen 3, Viper Cut, Version 2, FDE Cerakote , MPN: VRD-6-OP-KIT3-KIT1 , Code: VX-RD-VRD-6-VRD-6-OP-KIT4
Vortex Viper 1x24mm 6 MOA Red Dot Sight, Black, Viper Red Dot and TRYBE Defense Pistol Slide, Glock 19, Gen 3, Viper Cut, Version 2, Black Cerakote , MPN: VRD-6-KIT5 , Code: VX-RD-VRD-6-VRD-6-KIT5

Vortex Viper 1x24mm Reflex Red Dot Sight Unavailable & Discontinued Models

List of Unorderable Models

DEMO, Vortex Viper 1x24mm 6 MOA Red Dot Sight, CR2032 Battery, Black, VRD-6, Black, Viper Red Dot, VRD-6 , MPN: VRD-6-DEMO , Code: VX-RD-VRD-6-VRD-6-DEMO
USED Vortex Viper 1x24mm, 6 MOA Red Dot Sight CR2032 Battery, Black, VRD-6, EDEMO6, Condition Like New, Inspect and Rebox , MPN: VRD-6-EDEMO6 , Code: VX-RD-VRD-6-VRD-6-EDEMO-RE-A
Vortex Viper 1x24mm 6 MOA Red Dot Sight, Black, Viper Red Dot and TRYBE Defense Sig Sauer P320 Pistol Slide, Viper Cut, Black , MPN: VRD-6-KIT9 , Code: VX-RD-VRD-6-VRD-6-KIT9
Vortex Viper 1x24mm 6 MOA Red Dot Sight with 3x Magnifier w/ Flip Mount, CR2032 Battery, Black, VRD-6-KIT1 , MPN: VRD-6-KIT1 , Code: VX-RD-VRD-6-VRD-6-KIT1
Vortex Viper 1x24mm 6 MOA Red Dot Sight, FDE, Viper Red Dot and TRYBE Defense Sig Sauer P320 Pistol Slide, Viper Cut, FDE , MPN: VRD-6-OP-KIT3-KIT8 , Code: VX-RD-VRD-6-VRD-6-OP-KIT11
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