Armasight · Contractor 320 3-12x25

Estimated range, standing human, clear air

IdentifyRecognizeDetectBox claim

Armasight Contractor 320 3-12x25320×240 · 12 µm · 25 mm

80 m identify130 m recognize521 m detectbox says 932 m (human-sized target)

501002005001k2k5k m

Estimated from pixel pitch and lens focal length using the Johnson criteria (2, 8 and 13 pixels across a 0.5 m human critical dimension), clear air, 50 % probability. A model of the optics, not a measurement — real range depends on temperature contrast, humidity and the animal.

Armasight

Armasight Contractor 320 3-12x25

Riflescope320-class

The Armasight Contractor 320 3-12x25 is a 320×240, 12 µm thermal riflescope behind a 25 mm lens. On the Johnson yardstick that is an estimated 521 m detection and 130 m recognition range for a standing person; Armasight quotes 932 m detection (human-sized target). Its 4 h published run time is 45th-longest of the 64 units here that publish one.

Approx. price: ~$1,649
Sensor: 320×240 · 12 µm
Lens: 25 mm · 3.2×
Est. detection: 521 m · 570 yd

Best for

A dedicated night rifle for hogs and coyotes inside about 150 yards

We may earn a commission. Price and availability on Armasight’s site may differ.

Box claim vs. what the optics support

Manufacturer says

932 m

detection, human-sized target

Johnson estimate

521 m

detect · 130 m recognize · 80 m identify

Claim ÷ estimate

1.8×

how much further the box reaches than a 2-pixel, 0.5 m criterion

One pixel of this unit sees 0.480 mrad (12 µm ÷ 25 mm). Two pixels across a 0.5 m human is 0.5 ÷ (2 × 0.480) × 1000 = 521 m. The box figure is usually computed against a person’s 1.8 m height instead, which is why it comes out higher. Full explanation.

Specifications

Manufacturer-published figures, cross-checked against armasight.com (sale $1,649-2,999; MSRP $2,999).

Sensor: 320×240
Pixel pitch: 12 µm
NETD: <40 mK
Refresh rate: 60 Hz
Lens: 25 mm
Base magnification: 3.2×
Digital zoom: up to 4×
Field of view: 8.8° horizontal
Display: 1024x768 AMOLED
Claimed detection: 932 m
Claim basis: human-sized target
Run time: 4 h
Battery type: CR123
Weight: 26.5 oz
Length: 7.4″
Laser rangefinder: No
Ballistic calculator: No
Records video: Yes
Wi-Fi: Yes
IP rating: IP67
Warranty: 3 years
Approx. price: ~$1,649

Derived here

IFOV: 0.480 mrad
Est. detection: 521 m
Est. recognition: 130 m
Est. identification: 80 m
Claim ÷ estimate: 1.8×
Derived field of view: 8.8°
Pixels per degree: 36.4

Features

320 sensor
12 µm
25 mm lens
60 Hz
Removable battery
Records video
Wi-Fi
IP67
AMOLED display

What the spec sheet says

Read from the published specifications and this catalog’s own numbers — not from owner reports, which we have not collected for this unit.

For it

12 µm pitch — the 25 mm lens sees what a 17 µm core would need 35 mm to match
60 Hz core — 20 % more frames than the 50 Hz norm when an animal runs
Runs on CR123 cells you can swap in the field
IP67 sealed — survives immersion, not just rain
Records video and streams to a phone over Wi-Fi
Detection claim is only 1.8× our estimate — one of the more conservative box figures here

Against it