C
Cneber4199010/10
Reviewed on March 16, 2026Verified with Build
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Vortex Defender-ST Micro 6 MOA Red Dot Sight, Black - DFST-MRD6
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Vortex Optics
Overview
The Vortex Defender-ST Micro 6 MOA Red Dot Sight is a compact optic designed for quick target acquisition and versatility in various shooting scenarios. With a 6 MOA dot size, it provides a clear aiming point that is easy to track, while the Picatinny mounting interface ensures compatibility with a wide range of firearms. This red dot sight is commonly found on builds featuring a carbine gas system chambered in 5.56 NATO, making it a reliable choice for tactical and competitive applications.
Specifications
MPNDFST-MRD6
Reticle ColorRed
Mounting InterfacePicatinny
Dot Size6 MOA
ColorBlack
Optic TypeRed Dot
Frequently Built With
Based on build data
Weaver Multi-Slot Base - 48400
Streamlight ProTac Rail Mount HL-X Laser 1000 Lumen Weapon Light with Tape Switch - CR123A
NcStar Pro Series Sight Front/Rear Flip Up, Black - VMARFLC
Aero Precision M4e1 Complete Lower Receiver W/moe Sl Grip & Sl-S Carbine Stock
Geissele Automatics Llc Ar-15 Ssa-E X Lightning Bow Trigger
SilencerCo Velos LBP 556 Rifle Suppressor, Black
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
PlatformBased on real build data showing which platform (AR-15, AR-10, AR-9) builders pair with this product.
100%
AR-15100%
CaliberBased on real build data showing which calibers builders choose alongside this product.
63.6%
5.56 NATO63.6%
.308 Win18.2%
.223 Wylde18.2%
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
45.5%
Mid-Length45.5%
Carbine27.3%
Rifle27.3%
| Product | Category | Times Built Together |
|---|---|---|
| Weaver Multi-Slot Base - 48400 | 42 | |
| Streamlight ProTac Rail Mount HL-X Laser 1000 Lumen Weapon Light with Tape Switch - CR123A | 29 | |
| NcStar Pro Series Sight Front/Rear Flip Up, Black - VMARFLC | 24 | |
| Aero Precision M4e1 Complete Lower Receiver W/moe Sl Grip & Sl-S Carbine Stock | 22 | |
| Geissele Automatics Llc Ar-15 Ssa-E X Lightning Bow Trigger | 21 | |
| SilencerCo Velos LBP 556 Rifle Suppressor, Black | 20 |
| Platform | Percentage |
|---|---|
| AR-15 | 100% |
| Caliber | Percentage |
|---|---|
| 5.56 NATO | 63.6% |
| .308 Win | 18.2% |
| .223 Wylde | 18.2% |
| Gas System | Percentage |
|---|---|
| Mid-Length | 45.5% |
| Carbine | 27.3% |
| Rifle | 27.3% |
Builds Featuring This Part
See all 10 →Builds in the community that include the Vortex Defender-ST Micro 6 MOA Red Dot Sight, Black - DFST-MRD6
| Build | Parts | Total |
|---|---|---|
 | 22 | $1778.14 |
 | 25 | $5769.20 |
 | 25 | $1261.07 |
 | 22 | $1472.97 |
 | 30 | $2956.66 |
 | 10 | $774.91 |
 | 10 | $1137.32 |
 | 22 | $4864.96 |
 | 10 | $1325.31 |
 | 26 | $2441.55 |
Customer reviews
5.0out of 5
1 global rating