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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
Geissele Automatics Llc Ar-15 Ssa-E X Lightning Bow Trigger
NcStar Pro Series Sight Front/Rear Flip Up, Black - VMARFLC
Aero Precision Ar-15 Breach Charging Handle Ambidextrous Small Levers
Aero Precision M4e1 Complete Lower Receiver W/moe Sl Grip & Sl-S Carbine Stock
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 | 20 | |
| Streamlight ProTac Rail Mount HL-X Laser 1000 Lumen Weapon Light with Tape Switch - CR123A | 15 | |
| Geissele Automatics Llc Ar-15 Ssa-E X Lightning Bow Trigger | 14 | |
| NcStar Pro Series Sight Front/Rear Flip Up, Black - VMARFLC | 14 | |
| Aero Precision Ar-15 Breach Charging Handle Ambidextrous Small Levers | 13 | |
| Aero Precision M4e1 Complete Lower Receiver W/moe Sl Grip & Sl-S Carbine Stock | 13 |
| 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 | $1729.61 |
 | 25 | $5659.70 |
 | 25 | $1240.19 |
 | 22 | $1461.40 |
 | 30 | $2921.87 |
 | 10 | $815.64 |
 | 10 | $1179.78 |
 | 22 | $4859.08 |
 | 10 | $1309.34 |
 | 26 | $2401.97 |
Customer reviews
5.0out of 5
1 global rating