AGM Rattler V2 19-256 Thermal Rifle Scope

The Rattler V2 lineup at Thermal Bros how the 19-256 fits

Thermal Bros carries two scopes from the AGM Rattler V2 thermal rifle scope family. They're curated as a good/better pair the 19-256 as the accessible entry into the V2 platform, and the 25-320 as the refined step-up for hunters who want better sensor sensitivity, more reach, and tighter on-target framing.

• AGM Rattler V2 19-256 19 mm lens, 256—192 sensor, <35 mK NETD, 2.5— base magnification, 9.3° — 6.9° field of view, 950 yd detection range. The wider-FOV entry option.
• AGM Rattler V2 25-320 25 mm lens, 320—256 sensor, 3.5— base magnification, 1,200 yd detection range. The refined step-up.

The two scopes share the V2 platform 50 Hz refresh rate, 10 reticle options with multiple zeroing profiles, shot-activated video recording, Wi-Fi hotspot, the raised 5-button control layout, the custom ADM QD mount, and the NE-4400 rechargeable battery system. Sensor, lens, and magnification are what separate them.

Hold at the 19-256 when most hunting happens at close range on game-sized targets, when wide field of view matters more than reach, and when the most accessible price point in the lineup is the priority.

Why the 256 sensor is enough for most predator hunting

A 256—192 sensor gives you 49,152 pixels of thermal data. Combined with the 12-micron pixel pitch and NETD below 35 mK, that's enough resolution to separate game-sized targets cleanly from background heat animals show up as distinct warm shapes against cooler terrain at the distances most predator and hog hunters actually shoot.

The 256 tier's limit isn't detection (the 19-256 detects on a 6-foot target out to 950 yards). It's identification at distance pixel count constrains how much fine detail the image can resolve, so confident species ID happens closer in than it does on a higher-resolution sensor. For hunters whose typical engagement window is close range on coyote, fox, hog, or other game-sized targets, the 256 does the job and saves the price step.

Why the 19 mm lens earns its place

A shorter objective lens means a wider field of view at base magnification. The 19-256 pulls a 9.3° — 6.9° field the widest in Thermal Bros' Rattler V2 lineup. That matters for scanning. Open ground, pasture edges, tree lines, and the kind of close-range sit hunting where game appears at unpredictable angles all benefit from a wide initial frame.

The trade-off is reach the 19 mm lens doesn't pull distant targets in as tightly as a larger lens. For hunters whose primary use case is closer-range work where wide scanning beats narrow magnification, that's the right trade.

Why the 50 Hz refresh rate matters

The original Rattler ran at 25 Hz. The V2 line moves to 50 Hz. Panning across terrain, scanning a tree line, and tracking moving game all benefit from the faster frame draw the image stays smooth instead of stuttering on movement.

Why the Rattler V2 platform is different

Three things define the Rattler V2 platform on the 19-256:

• Custom ADM QD mount included. The V2 ships with the custom ADM QD mount in the box no separate mount purchase required to get the scope on a rifle.
• NE-4400 dual-battery field-swap system. Two NE-4400 rechargeable lithium-ion batteries ship in the box. The battery compartment is built for fast field swaps pull the depleted battery, drop in the charged spare. Up to 11.5 hours per battery at 25°C with the Wi-Fi hotspot off.
• Shot-activated recording with multiple zeroing profiles. The V2 line records hunts automatically when the rifle fires, capturing a pre-shot buffer plus post-shot footage with audio. The zeroing profile system lets shooters store separate zeros for different rifles or different loads on the same rifle and switch between them from the menu.

What you get with the Rattler V2 19-256

• 256 — 192 thermal sensor with 12 μm pixel pitch. Entry tier of the Rattler V2 line enough resolution for clean separation of game-sized targets at predator-hunting distances.
• NETD <35 mK. Sensor sensitivity that holds image quality in marginal heat differentials and adverse weather.
• 19 mm F/1.0 germanium objective lens. The widest-FOV lens option in Thermal Bros' Rattler V2 lineup.
• 2.5— base magnification, 2.5—–20— total range with 8— max digital zoom (steps of 1—, 2—, 4—, 8—).
• 950-yard detection range on a 6-foot object.
• 50 Hz refresh rate for smooth real-time imaging on moving targets.
• 0.39-inch OLED display, 1024 — 768.
• 9.3° — 6.9° angular field of view (49 ft at 100 yards).
• 10 reticle options in 4 colors with multiple zeroing profiles for different rifles or loads.
• Shot-activated video recording with pre-shot buffer; manual photo, video, and audio recording also supported.
• Wi-Fi hotspot with smartphone streaming and file transfer via the AGM Connect app.
• 16 GB internal EMMC storage for on-device file capture.
• Multiple color palettes: Black Hot, White Hot, Red Hot, Fusion.
• Cold and Warm scene modes to tune the sensor for the environment.
• Picture-in-Picture mode and defective pixel correction built in.
• NE-4400 dual-battery field-swap system. Two rechargeable Li-Ion batteries included; up to 11.5 hours per battery at 25°C; USB Type-C charging.
• IP67-rated waterproof and dustproof construction.
• Operating temperature range -30°C to +55°C (-22°F to 131°F).
• Raised 5-button control layout designed for navigation with gloves on.
• Custom ADM QD mount included.
• AGM 5-year manufacturer warranty.

Who the Rattler V2 19-256 is built for

• Hunters new to thermal optics who want the full V2 platform at the most accessible price in Thermal Bros' Rattler V2 lineup
• Predator and varmint hunters running rimfire or short-action centerfire rifles where most shots happen at close range
• Hog hunters working open ground, pasture edges, and tree lines where wide field of view aids scanning
• Hunters wanting a wide-FOV backup or buddy scope to complement a tighter, longer-reach primary on a different rifle
• Buyers who want to enter thermal without compromising on the V2 platform features shot-activated recording, multiple zeroing profiles, ADM QD mount, dual-battery field swap that the higher-tier 25-320 also shares

Full specifications

• Thermal sensor: 256 — 192, 12 μm pixel pitch
• Sensor architecture: 12 μm VOx uncooled focal plane array
• NETD: <35 mK (25°C, F# = 1.0)
• Objective lens: 19 mm F/1.0 germanium
• Base magnification: 2.5—
• Magnification range: 2.5—–20— (8— max digital zoom; steps of 1—, 2—, 4—, 8—)
• Field of view: 9.3° — 6.9° (49 ft at 100 yards)
• Detection range: up to 950 yards (6-foot object)
• Display: 0.39-inch OLED, 1024 — 768
• Refresh rate: 50 Hz
• Eye relief: 45 mm
• Diopter range: -5 to +5
• Focus range: 0.5 m to infinity
• Color palettes: Black Hot, White Hot, Red Hot, Fusion
• Scene modes: Cold, Warm
• Reticles: 10 types, 4 colors, on/off, with multiple zeroing profiles
• Picture-in-Picture: yes
• Defective pixel correction: yes
• Wi-Fi hotspot: yes (AGM Connect app)
• Recording: photo, video, audio; shot-activated and manual
• Internal storage: 16 GB EMMC
• Battery system: NE-4400 rechargeable Li-Ion (two included), field-swappable
• Battery life: up to 11.5 hours per battery (25°C, hotspot off)
• External power: 5 VDC, 2 A, USB Type-C
• Operating temperature: -30°C to +55°C (-22°F to 131°F)
• Construction: IP67 waterproof and dustproof
• Mount: custom ADM QD mount (included)
• Dimensions: 8.5 — 2.7 — 2.6 in (219 — 68 — 67 mm) without mount
• Weight: 1.06 lb (0.48 kg) without mount
• Warranty: AGM 5-year manufacturer warranty

In the box: thermal rifle scope, ADM QD mount, two NE-4400 rechargeable batteries, battery charger, USB cable, lens cloth, owner's manual, carrying case.

Frequently asked questions

Where does the 19-256 fit in Thermal Bros' Rattler V2 lineup?

Thermal Bros carries two scopes from the AGM Rattler V2 family. The 19-256 is the wider-FOV entry option built around the 256—192 sensor with a 19 mm lens, 2.5— base magnification, and 950-yard detection range, positioned for hunters new to thermal optics and for closer-range predator work. The 25-320 is the refined step-up with a 320—256 sensor, 25 mm lens, 3.5— base magnification, and 1,200-yard detection range. Step up to the 25-320 when sharper image quality and longer reach are the deciding factors.

Is the 256 sensor enough for my hunting?

For predator and hog hunting at close range on game-sized targets, yes. The 256—192 sensor identifies coyote-sized and larger targets cleanly at that range. If most hunting happens at longer distances or in marginal conditions where sensor sensitivity matters more, the 25-320's 320—256 sensor and better NETD resolve a cleaner image at distance and earn the price step.

What's the difference between the V2 and the original Rattler?

AGM positions the V2 as an improved version of the original Rattler. The 19-256 carries three documented V2 upgrades: the refresh rate moves from 25 Hz to 50 Hz for smoother imaging on movement, the battery system shifts to the NE-4400 rechargeable platform (two batteries included, up to 11.5 hours each, with field-swappable compartment), and the menu and reticle system is rebuilt with the simplified layout, 10 reticle options, and multiple zeroing profiles. Shot-activated video recording with audio is also part of the V2 feature set.

How long does the battery last?

Up to 11.5 hours per battery at 25°C with the Wi-Fi hotspot off. Two NE-4400 rechargeable batteries ship in the box, and the compartment is built for fast field swaps.

Does the 19-256 record video?

Yes. Manual video and audio recording, snapshot capture, and shot-activated recording with a pre-shot buffer are all built in. Files save to 16 GB of internal EMMC storage and can be transferred via USB Type-C or streamed and downloaded over Wi-Fi through the AGM Connect app.

What's the deal with the multiple zeroing profiles?

The Rattler V2 platform stores separate zeros under named profiles. That lets shooters use the same scope across more than one rifle (move the scope between platforms and select the matching profile) or store multiple loads on a single rifle and switch between them in the menu.

What mount comes with the 19-256?

The 19-256 ships with a custom ADM QD (quick-detach) mount in the box.

Is the 19-256 waterproof?

Yes. The scope is IP67-rated sealed against dust ingress and rated for water immersion up to one meter for 30 minutes. Built for rain, snow, and adverse weather conditions in the field.

What's the warranty?

AGM backs the Rattler V2 19-256 with their 5-year manufacturer warranty.