NewOut Of Stock Vector Optics Frenzy FA 16x21 Standard MOS Red Dot Sight SDM
The Vector Optics Frenzy FA 16x21 Standard MOS Red Dot Sight SDM is a pistol red dot sight designed for direct fitting to GLOCK® Standard MOS pistol slides, with no adapter required. Its low-profile mounting height allows a natural co-witness with iron sights.
A 3 MOA red dot provides the aiming point, with 11 illumination settings comprising nine daytime and two night-vision-compatible modes. The sight uses a multi-coated lens and a parallax-free design, with parallax specified at ≤2 MOA.
The Frenzy FA has a motion-sensor automatic power on/off function and a side-loading CR1632 battery tray, allowing battery changes without re-zeroing. Its 7075-T6 aluminium alloy housing has a matte black finish and is rated IPX7 waterproof and 1500G shockproof.
- Product Vector Optics Frenzy FA 16x21 Standard MOS Red Dot Sight SDM
- Model/SKU SCRD-81
- Sight type Pistol red dot sight
- Compatibility GLOCK® Standard MOS pistols
- Mounting Directly mounts to GLOCK® Standard MOS pistol slides without an adapter
- Mounting height Low profile
- Co-witness Natural co-witness with iron sights
- Magnification N/A
- Window lens size 16 x 21 mm / 0.63 x 0.83 in
- Lens Multi-coated
- Dot size 3 MOA
- Reticle colour Red
- Parallax Free, ≤2 MOA
- Parallax setting 33 yards / 30 m
- Click value 1 MOA
- Elevation adjustment range ≥120 MOA
- Windage adjustment range ≥120 MOA
- Illumination settings 11 settings, comprising 9 daytime and 2 NV settings
- NV compatibility Yes
- Sensor Motion sensor automatic power on/off
- Battery type CR1632
- Battery position Side-loading tray
- Battery replacement Can be changed without re-zeroing
- Waterproof rating IPX7
- Shockproof rating 1500G
- Operating temperature -20°C to +60°C
- Housing material 7075-T6 aluminium alloy
- Finish Matte black
- Weight 33 g / 1.16 oz, including battery
- Warranty Lifetime warranty
- In the box Hex keys, Vekey, cleaning cloth and user manual
- Directly mounts to GLOCK® Standard MOS pistol slides without an adapter
- Low-profile mounting height
- Natural co-witness with iron sights
- 3 MOA red dot aiming point
- Motion sensor for automatic power on and off
- Side-loading CR1632 battery tray
- Battery can be replaced without re-zeroing
- Multi-coated lens
- Night-vision-compatible illumination
- 11 illumination settings, including nine daytime and two NV settings
- Parallax-free design
- 7075-T6 aluminium alloy housing
- IPX7 waterproof rating
- 1500G shockproof construction
- Matte black finish
- Lifetime warranty
Will this red dot sight fit a GLOCK® Standard MOS pistol?
Yes. It is designed for GLOCK® Standard MOS pistols and mounts directly to the pistol slide.
Is an adapter needed to mount the sight?
No. It mounts to GLOCK® Standard MOS pistol slides without an adapter.
What size is the red dot?
The sight uses a 3 MOA red dot.
Does the sight co-witness with iron sights?
Yes. It provides a natural co-witness with iron sights.
How many brightness settings does it have?
It has 11 illumination settings: 9 daytime settings and 2 NV-compatible settings.
Is the sight compatible with night vision?
Yes. It has two NV-compatible illumination settings.
What battery does it use?
It uses one CR1632 battery.
Can the battery be changed without re-zeroing the sight?
Yes. The CR1632 battery is fitted in a side-loading tray, allowing replacement without re-zeroing.
Does the sight switch on and off automatically?
Yes. It has a motion sensor automatic power on/off function.
Is the sight waterproof?
Yes. It has an IPX7 waterproof rating.
How shock resistant is it?
It is rated as shockproof to 1500G.
What is the housing made from?
The housing is made from 7075-T6 aluminium alloy with a matte black finish.
What are the lens dimensions?
The window lens measures 16 x 21 mm.
What does the sight weigh?
It weighs 33 g / 1.16 oz, including the battery.
What is included in the box?
The box includes hex keys, a Vekey, cleaning cloth and user manual.
Does it come with a warranty?
Yes. It includes a lifetime warranty.
What is the battery life?
Battery life is not stated.
What are the overall dimensions of the sight?
Overall dimensions are not stated.
Lifetime Warranty
Delivery costs & estimated arrival
Find your country below for the delivery charge and how long your order should take to reach you. All orders ship with FedEx. Estimates are in working days and exclude weekends and public holidays.
| Country | Up to 2kg | 2kg – 30kg | Estimated delivery | ||
|---|---|---|---|---|---|
| Order under €350 | Order €350 & over | Order under €350 | Order €350 & over | ||
| Austria | €11.95 | €26.95 | €26.95 | €26.95 | 5-7 working days |
| Belgium | €8.95 | €14.95 | €14.95 | €14.95 | 4-6 working days |
| Bulgaria | €11.95 | €31.95 | €31.95 | €31.95 | 7-9 working days |
| Croatia | €11.95 | €31.95 | €31.95 | €31.95 | 6-8 working days |
| Cyprus | €14.95 | €89.95 | €89.95 | €89.95 | Contact us |
| Czechia | €10.95 | €21.95 | €21.95 | €21.95 | 5-7 working days |
| Denmark | €10.95 | €21.95 | €21.95 | €21.95 | 4-6 working days |
| Estonia | €11.95 | €31.95 | €31.95 | €31.95 | 6-8 working days |
| Finland | €11.95 | €26.95 | €26.95 | €26.95 | 5-7 working days |
| France | €10.95 | €21.95 | €21.95 | €21.95 | 4-6 working days |
| Germany | €8.95 | €14.95 | €14.95 | €14.95 | 5-7 working days |
| Greece | €11.95 | €31.95 | €31.95 | €31.95 | 8-10 working days |
| Hungary | €11.95 | €31.95 | €31.95 | €31.95 | 5-7 working days |
| Ireland | €6.95 | €6.95 | €8.95 | €8.95 | 2-4 working days |
| Italy | €10.95 | €21.95 | €21.95 | €21.95 | 5-7 working days |
| Latvia | €11.95 | €31.95 | €31.95 | €31.95 | 6-8 working days |
| Lithuania | €11.95 | €31.95 | €31.95 | €31.95 | 6-8 working days |
| Luxembourg | €11.95 | €31.95 | €31.95 | €31.95 | 5-7 working days |
| Malta | €14.95 | €89.95 | €89.95 | €89.95 | Contact us |
| Monaco | €10.95 | €21.95 | €21.95 | €21.95 | 4-6 working days |
| Poland | €10.95 | €21.95 | €21.95 | €21.95 | 5-7 working days |
| Romania | €11.95 | €31.95 | €31.95 | €31.95 | 6-8 working days |
| Slovakia | €11.95 | €31.95 | €31.95 | €31.95 | 5-7 working days |
| Slovenia | €11.95 | €31.95 | €31.95 | €31.95 | 6-8 working days |
| Spain | €11.95 | €26.95 | €26.95 | €26.95 | 5-7 working days |
| Sweden | €11.95 | €26.95 | €26.95 | €26.95 | 5-7 working days |
Returns & withdrawal
Which option you use depends on why you are sending the item back.
Changed your mind?
You have 14 days from receiving your order to withdraw from your purchase. Use our Withdrawal from Contract form to tell us. It is the quickest way, and we will then email you a free returns label.
If you would rather post the item back yourself to our returns address in Ireland, you pay the postage. Full details are on our Returns page.
Withdrawal from ContractFaulty, damaged or wrong item?
If your item arrived faulty, damaged or not what you ordered, please follow the steps on our Returns page. We cover the cost of returning these items.
Full details of all our return options are on that page.
Returns pageDelivery prices are shown in euros and confirmed at checkout.

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