Firefield 10x50 Siege Tactical Monocular (Black)

Firefield 10x50 Siege Tactical Monocular (Black)

Firefield 10x50 Siege Tactical Monocular (Black)

B&H # FIS10X50TM MFR # FF12004T
Special Order
Expected availability: 7-10 business days

Product Highlights

  • Compact BAK4 Roof Prisms
  • Fully Multi-Coated Optics
  • Integrated Rangefinding Reticle
  • Wide 70° Apparent Angle of View
  • IP67-Rated, Dust and Waterproof
  • Nitrogen-Filled, Fogproof
  • Textured Black Rubber Armoring
  • Large User-Facing Focusing Knob
  • Tripod Mountable with Optional Adapter
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Options: Ranging Reticle

Ranging Reticle Standard

Special Order

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Firefield Siege overview

  • 1Description

With an integrated in-view ranging reticle, Firefield's black 10x50 Siege Tactical Monocular is designed with hunters and professionals in mind as a highly portable field optic for long-range use even in challenging light conditions. Its reticle uses a series of hashes and stadia to provide users with the tools required for estimating the distance to, and the size of, their target; and for ballistic drop compensation and improved first-shot accuracy.

The combination of magnification and objective lens ensures an ultra-wide 70° apparent angle of view and large exit pupil, with enhanced light gathering ability versus smaller comparable models. Added to these features are anti-reflection fully multi-coated optics and BAK4 roof prisms which maximize light transmission through the optical path, producing bright and clear high-contrast images with accurate color rendition.

The housing is made of a lightweight and durable plastic that is wrapped in a protective black rubber armor. Accents on the armor promote a more secure grip, helping to increase its handling in cold and wet weather. The optical tube is O-ring sealed to an IP67-rating making it dustproof, and submersible to a depth of 3.3' (1m) for up to one hour. The optical tube is also nitrogen-filled to be resistant to internal fogging during extreme changes in temperature and environmental conditions. Construction details such as a twist-up eyecup and a standard 1/4"-20 tripod mount add to the comfort and usability of the monocular.

Optical Performance
  • High 10x magnification enables detailed observations of distant subjects
  • Large 50mm objective lens diameter draws in copious amounts of light to boost its light-gathering ability in challenging conditions such as at dawn and dusk
  • Compact BAK4 roof prisms deliver a round exit pupil, and a crisp and clear image with limited edge distortion
  • Anti-reflection fully multi-coated optics produce views with improved color rendition, contrast, and clarity
  • Ultra-wide 70° apparent angle of view minimizes the appearance of visible hand shake that is common when holding high-power optics
  • 367-foot field of view at 1000 yards
Use and Handling
  • Rangefinder reticle utilizes hashes and stadia to provide the means for estimating the distance to, and the size of, the target for determining BDC and improving first-shot accuracy
  • Large textured user-facing focusing knob is easy to find and manipulate without looking and even when wearing gloves
  • Convenient twist-up rubber eyecups for comfortable use with or without eyewear
  • Standard 1/4"-20 tripod mount allows for hands-free use to reduce fatigue and hand shake that can interfere with viewings
  • Long 15.4mm eye relief helps to reduce eye strain and improve viewing comfort
  • Wide 5mm exit pupil will completely cover most pupils as they open and dilate as light fades
Construction Details
  • Lightweight and impact-resistant plastic chassis
  • Nitrogen-filled to be resistant to internal fogging when moving through extreme variations in temperature and conditions
  • O-ring sealed to a dust and waterproof IP67 rating, making it submersible to 3.3' (1m) for up to 1 hour
  • Textured black rubber armor protects against impacts while providing a slip-resistant grip
  • Integrated accents add grip strength and stability for sure handling
  • Tethered objective lens cover allows for easy use without the threat of loss
  • Broad 0 to 120°F (-17 to 49°C) operating temperature
  • Weight: 15.2 ounces
UPC: 812495022616
In the Box
Firefield 10x50 Siege Tactical Monocular (Black)
  • Wrist Strap
  • Nylon Carrying Case
  • Eyepiece Cap
  • Tethered Objective Lens Cap
  • Limited 3-Year Warranty
  • Table of Contents
    • 1Description

    Firefield Siege specs

    Prism Type Roof
    Magnification 10x
    Objective Lens Diameter 50mm
    Angle of View 7.0°, actual
    Field of View 367' @ 1000 yd / 122 m @ 1000 m
    Minimum Focus Distance 13.0' / 4.0 m
    Exit Pupil Diameter 5.0 mm
    Eye Relief 15.4 mm
    Dioptric Correction None
    Tripod Mount Yes (built-in)
    Dimensions 6.2 x 2.6 x 2.2" / 15.7 x 6.6 x 5.6 cm
    Weight 15.2 oz / 430.9 g

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