InfiTac Fast Mini FMP13 Thermal

The InfiTac Fast Mini FMP13 is a thermal sight the size of a red dot. That's the whole idea, and it's genuinely new: InfiTac packed a working thermal imager into a 4-ounce housing with a standard RMR footprint, so it mounts where only a mini red dot could go before. It's billed as the world's first multi-function thermal pistol/rifle sight, and it runs three ways, direct-mounted on an optics-ready pistol, as a 45° offset thermal on a rifle next to your day optic, or in your hand as a pocket thermal scanner. For getting into thermal without the bulk or the price of a full-size scope, nothing else is quite this small.

Under the hood it's a 256×192 thermal sensor with a 12µm pixel pitch and a bright 13mm f/1.0 lens, feeding a 1.4" 360×300 touchscreen display at a smooth 60Hz refresh. You get multiple color palettes (white hot, black hot, red hot, and more) and a multi-reticle system with a 6 MOA dot, a 6 MOA dot with a 65 MOA circle, or a 6 MOA dot with a 130 MOA circle, all swappable with a swipe. The touchscreen runs like a tiny smartwatch, and physical buttons are there too if you'd rather not touch the glass. InstaWake uses a built-in gyro to wake the display the instant you pick up the firearm, so it's ready without a button press.

One honest thing to know before you buy, because it determines how you should run it: the FMP13 is at its best as a low-light and nighttime tool, an offset rifle thermal, or a handheld scanner, not as a daytime pistol red-dot replacement. Reviewers consistently find the thermal display hard to see and aim with quickly in bright daylight, which is true of small thermal screens in general. Where it genuinely shines is at night and in no-light conditions: as a 45° offset thermal you roll the rifle to get a heat check without giving up your day optic, as a handheld you scan for game or movement before you shoulder up, and on a pistol it's a real tool for home defense in total darkness or smoke. Buy it for those roles and it's an excellent value; expect a do-everything daytime pistol dot and it isn't that.

It's built tougher than its size suggests: IP67 waterproof, rated to 1200G of recoil (it holds up to suppressed fire and hard use), and it runs about 5 hours on a common CR2 battery, with a USB-C port for external power off a battery bank. It ships in a hard case with the RMR mounting plate installed, two CR2 batteries, a protective cover, and two thermal zeroing targets so you can sight it in out of the box. We carry it in black and FDE. Browse the rest of our optics and night vision here.

Mounting: Pistol and Rifle Options

Out of the box it comes with the standard RMR footprint plate, so it drops onto any RMR-cut optics-ready pistol slide. InfiTac makes additional adapters if you need them: RMSc, DeltaPoint Pro, and Glock MOS plates for other pistols, and rifle mounts including Picatinny, a low Picatinny, a 30mm ring, a 45° offset, and an Aimpoint Acro interface. If you're planning to run it as an offset rifle thermal (which is where most people get the most out of it), you'll want the 45° offset mount. Tell us your platform and we'll help you get the right plate.

Thermal vs Night Vision

Thermal like the FMP13 detects heat, so it sees warm targets in complete darkness, smoke, and light foliage with no ambient light at all, and no bright light source can wash it out or damage it the way it can night vision. What it doesn't do is show fine visual detail or let you read features. If you want detail and a natural-looking low-light image instead, that's night vision territory, see the DNT NVMD-C200. New to running either? Our NVG Cards cover the low-light fundamentals.

Want More Thermal Performance?

The FMP13 is the compact, affordable entry point. If you want a higher-resolution thermal with longer detection range for serious hunting or rifle work, step up to the iRay RL25 V2 (384×288) or the iRay RH25 V2 (640×480), both full multifunction thermals with bigger sensors and more reach.

Key Features

• Red-dot-size thermal. 4 oz in a standard RMR footprint, mounts where only mini red dots fit.
• Three roles. Pistol sight, 45° offset rifle thermal, or handheld scanner.
• 256×192 at 60Hz. Smooth thermal image through a bright 13mm f/1.0 lens.
• Touchscreen + buttons. Swipe to change reticles and palettes, or use the buttons.
• Multi-reticle. 6 MOA dot, or with a 65 or 130 MOA circle.
• InstaWake. Wakes the instant you pick up the firearm.
• Tough. IP67 waterproof, 1200G recoil rated, handles suppressed fire.
• Ready to run. Ships with hard case, RMR plate, two CR2 batteries, and zeroing targets.

Specs

• Type: Compact multi-function thermal sight
• Sensor: 256×192, 12µm pixel pitch
• Refresh rate: 60Hz
• Lens: 13mm f/1.0
• Field of view: ~13.5° × 10.1°
• Display: 1.4" 360×300 touchscreen, 1x/2x electronic zoom
• Reticles: 6 MOA dot / 6 MOA + 65 MOA circle / 6 MOA + 130 MOA circle
• Palettes: White hot, black hot, red hot, and more
• Footprint: Standard RMR (adapters available for RMSc, DPP, MOS, and rifle mounts)
• Power: CR2 battery, ~5 hours; USB-C external power
• Sealing: IP67 waterproof
• Recoil rating: 1200G
• Weight: ~4 oz
• Included: Hard case, RMR plate, 2x CR2 batteries, protective cover, 2 thermal zeroing targets
• Colors: Black or FDE

FAQ

Can I really use this as a pistol optic?
Yes, it mounts on an RMR-cut pistol, but be realistic about the role. It works best in low light and darkness, for home defense in no-light or smoke, for example. In bright daylight the small thermal display is hard to aim with quickly, so it's not a direct replacement for a daytime red dot. Many owners get the most out of it as a 45° offset rifle thermal or handheld scanner.

What's the best way to run it?
As a 45° offset thermal on a rifle, you keep your day optic and roll the rifle for a quick heat check, or as a handheld scanner to spot heat before you shoulder up. On a pistol it's a specialized low-light tool. All three roles work; the offset and scanner roles are where most people find it most useful.

What does it fit?
It comes with a standard RMR footprint plate for RMR-cut optics-ready slides. InfiTac sells adapters for RMSc, DeltaPoint Pro, and Glock MOS pistols, plus rifle mounts (Picatinny, low Picatinny, 30mm ring, 45° offset, and Aimpoint Acro). Contact us if you're not sure what your setup needs.

How's the battery life?
About 5 hours on a CR2 battery (realistically a bit less with heavy use). It ships with two CR2 batteries, and the USB-C port accepts external power from a battery bank if you want longer runtime. An optional rechargeable CR2 charger kit is also available.

Is thermal better than night vision?
They're different tools. Thermal detects heat and works in total darkness, smoke, and light brush with no ambient light, and no bright light can wash it out. Night vision amplifies light and shows fine detail but needs some light to work. For detecting warm targets in the dark, thermal wins; for identifying detail, night vision does.

Will it survive recoil and a suppressor?
Yes. It's rated to 1200G of recoil and IP67 waterproof, and reviewers have run it through suppressed fire and hundreds of rounds without issues. A hot suppressor may show as a glow at the bottom of the screen but doesn't take over the image.