Vortex 3x21 Spitfire HD Gen II Prism Scope (AR-BDC4 Reticle)

BH #VOSPR300 • MFR #SPR-300
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Vortex 3x21 Spitfire HD Gen II Prism Scope (AR-BDC4 Reticle)
Key Features
  • Variable Red Circle-Dot Reticle
  • Ballistic Drop Compensation for 5.56 Cal
  • High-Density Lens System
  • Anti-Reflection Fully Multicoated Optics
Designed for the 5.56 caliber AR platform, the Vortex Optics 3x21 Spitfire HD Gen II Prism Scope will help you get on target, and stay on target, quickly and easily. Its versatile reticle allows easy viewing at close-range to as far as 650 yards in all light conditions. The one-piece lightweight aluminum housing has a low-reflectivity matte anodized finish and is engineered to be water, fog, and shockproof. You can also choose to mount it low to minimize the profile or higher at a lower 1/3 co-witness with your backup iron sights (BUIS).
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Vortex Spitfire HD Overview

From Manufacturer

Designed for the 5.56 caliber AR platform, the Vortex Optics 3x21 Spitfire HD Gen II Prism Scope will help you get on target, and stay on target, quickly and easily. Its versatile reticle allows easy viewing at close-range to as far as 650 yards in all light conditions. The one-piece lightweight aluminum housing has a low-reflectivity matte anodized finish and is engineered to be water, fog, and shockproof. You can also choose to mount it low to minimize the profile or higher at a lower 1/3 co-witness with your backup iron sights (BUIS).

Optical Performance
  • 3x magnification is ideal for close-, mid-, and even long-range uses to as far as 650 yards
  • Low-profile 21mm sight window
  • High-density (HD) lens system increases contrast and improves color rendition and sharpness without distortion across the field of view
  • Anti-reflection fully multicoated optics maximize light transmission to the user's eye
  • 37.9' field of view at 100 yards
AR-BDC4 Reticle Details
  • Partial red illumination with adjustable brightness levels
  • Reticle etched on glass for durability
  • 1 MOA center dot provides a clear aiming point for small or distant targets
  • 18.85 MOA open circle allows fast target acquisition and tracking of close targets without obstruction
  • Ballistic drop compensation (BDC) indicator subtensions to accurately place shots out to 650 yards with 5 mph wind indicators
  • BDC subtensions designed for 5.56 caliber rounds
  • 10 daylight and 2 NVD-compatible brightness levels enable precise control in bright daylight or pitch dark
  • Auto-shutoff after 14 hours to conserve battery power
  • Runs on one included CR2032 battery
Use and Handling
  • 1 MOA impact point correction with 42 MOA of travel per rotation
  • 250 MOA total elevation and windage adjustment range
  • Parallax set at 100 yards
  • Reticle focus ensures tack-sharp aiming points
  • Long 2.6" eye relief provides a generous eye box
Construction Details
  • Lightweight one-piece aluminum housing stands up to recoil and use
  • Low-glare matte black anodized finish is also scratch-resistant
  • Waterproof and nitrogen filled to resist internal fogging in extreme conditions
  • Two mounting options: Low mount (27mm) or lower 1/3 co-witness (40mm) with BUIS
  • Tethered caps prevent loss and stay close to hand
  • Compact and lightweight: 3" long and 9-ounce weight
UPC: 843829115025

Vortex Spitfire HD Specs

Key Specs
Reticle
1 MOA Circle-Dot
Reticle Color
Red
Power Source
1 x CR2032
Mounting
Picatinny
Magnification
3x
General
Reticle
1 MOA Circle-Dot
Reticle Color
Red
Eye Relief
0 to 66 mm
Power Source
1 x CR2032
Mounting
Picatinny
Quick Release
No
Optics
Magnification
3x
Objective Lens Diameter
21 mm
Field of View
37.9' @ 100 yd / 12.6 m @ 100 m
Parallax Setting
100 yd / 91.4 m
Anti-Reflective Coatings
,
Impact Point Correction
250 MOA (Windage & Elevation)
Adjustment per Click: 1 MOA
Physical
Environmental Resistance
Water-Resistant (Unrated)
Fogproof
Yes: Nitrogen Filled
Materials
Aluminum
Dimensions
L: 3.0 x W: 2.0 x H: 1.8" / L: 7.6 x W: 5.1 x H: 4.6 cm
Weight
9 oz / 255 g
Packaging Info
Package Weight
1.02 lb
Box Dimensions (LxWxH)
8.6 x 4.6 x 2.8"

Vortex Spitfire HD Reviews

Vortex Rocks but the Spitfire has awful eye relief

By Chris T.
Rated 3 out of 5
Date: 2026-01-18

I love Vortex optics. I have binoculars, a spotting scope and a holographic, a red dot, 7 rifle scopes and now the Spitfire 3X. The glass is very clear but my goodness the eye relief is absolutely awful. I have to have my face around 3 inches from the optic in order to have a clear view of the entire optic. I don't think I would do this again and I'm sure I am going to replace it.

Excellent optic

By M T
Rated 5 out of 5
Date: 2022-06-17

Very solid optic for my AR platform. I had to move it back further than I had planned to get the eye relief right for my vision, but it works well and the 3x magnification makes snapping onto target a breeze. Different users may have to play with the distance from the eye, but once it is locked in you are set. For those who wrote reviews complaining about the screws working loose, may I be so bold as to recommend some Loctite?

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