AGM Rattler V2 19-256 Thermal Rifle Scope

The AGM Rattler V2 19-256 is the entry tier of Thermal Bros' AGM Rattler V2 thermal rifle scope offering — the wider-field-of-view choice in the lineup, built around close-to-mid range hog and predator hunting and built to keep the V2 platform's full feature set accessible to hunters entering thermal optics for the first time.

The V2 designation is meaningful: it marks the generation where AGM moved the Rattler line off the original platform and onto a faster, more refined chassis. The 19-256 carries the full V2 upgrade — a 50 Hz refresh rate (doubled from the original Rattler's 25 Hz), the upgraded NE-4400 rechargeable battery compartment with up to 11.5 hours of runtime per battery (two included), a simplified menu layout, 10 reticle options with multiple zeroing profiles, shot-activated video recording, the raised 5-button control layout that's usable with gloves on, and the custom ADM QD mount that ships in the box. Nothing in the platform is held back at this tier — only the sensor and lens combination separates the 19-256 from the rest of the family.

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 without crossing into the 384-tier price bracket.

• 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, NETD, and magnification range are what separate them.

Hold at the 19-256 when most hunting happens inside 150 yards on game-sized targets, when wide field of view matters more than reach, and when the most accessible price point in the V2 line 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 inside 150 yards on coyote, fox, hog, or other game-sized targets, that limit rarely shows up. 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 25, 35, or 50 mm option. 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 across the platform. 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. 50 Hz is also where most current-generation thermal scopes live, so the V2 platform stays current with the broader market rather than feeling like a generation behind.

Why the Rattler V2 platform is different

Three things make the Rattler V2 platform stand out at its price point:

• Custom ADM QD mount included. Most entry-tier thermal scopes ship with a basic Weaver mount or no mount at all. The V2 ships with an ADM (American Defense Manufacturing) quick-detach mount that returns to zero on reattachment — the same mount style hunters running premium scopes pay extra for.
• NE-4400 dual-battery hot-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, and keep hunting. Up to 11.5 hours per battery at 25°C with the Wi-Fi hotspot off; up to 23 hours of total runtime with the included spare.
• Shot-activated recording with multiple zeroing profiles. The V2 line records hunts automatically with a pre-shot buffer and post-shot capture, no manual trigger required. 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 — useful for hunters running the same scope across more than one platform.

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 (black, white, red, green) 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 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 the line
• Predator and varmint hunters running rimfire or short-action centerfire rifles where most shots happen inside 150 yards
• 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 platform features — shot-activated recording, multiple zeroing profiles, ADM QD mount, dual-battery hot-swap — that the higher-tier Rattler V2 models share

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 (black, white, red, green) 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 interface: Weaver/Picatinny rail (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 Type-C 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 inside 150 yards on game-sized targets, yes. The 256×192 sensor identifies coyote-sized and larger targets cleanly at that range. If most hunting happens past 150 yards or in marginal conditions where sensor sensitivity matters more, the 25-320's 320×256 sensor and better NETD resolve cleaner image at distance and earn the price step.

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

The V2 line upgrades the original Rattler in three meaningful ways. First, the refresh rate doubles from 25 Hz to 50 Hz for smoother imaging on movement. Second, the battery compartment is rebuilt around the rechargeable NE-4400 system — two batteries included, up to 11.5 hours each, with field-swappable hot-swap. Third, the menu and reticle system is overhauled with the simplified layout, 10 reticle options, and multiple zeroing profiles. The V2 also adds shot-activated recording with audio and ships the ADM QD mount as standard.

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. With one charged spare, that's up to 23 hours of total runtime per outing.

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 (subsonic vs. supersonic, different bullet weights) and switch between them in the menu.

What mount comes with the 19-256?

A custom ADM (American Defense Manufacturing) QD (quick-detach) mount is included with the scope. It mounts to standard Weaver and Picatinny rails and returns to zero on reattachment.

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.