THERMISIGHT DYNAMICS LLC
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FLIR Brez RC157 Thermal Clip-On
NDAA §889 compliant · U.S. end-use only
In stock · ships within 1 business day
FLIR Brez RC157 thermal clip-on — 256×256 resolution, 50mm objective, 2000yd detection range, 50mK NETD. Demo product for catalog validation.
U.S. export-controlled. Thermal and night-vision devices are subject to U.S. ITAR/EAR controls and are not exportable outside the United States. By checking the box you confirm you are a U.S. person purchasing for end-use within the United States. See our Export Compliance policy.
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Why This Product
The FLIR Brez RC157 Thermal Clip-On is a clip-on thermal adapter that turns your existing day scope into a night optic — no re-zeroing required. Its 256×256 sensor and 50 mK NETD sensitivity delivers clear, reliable thermal imagery in most conditions. A built-in laser rangefinder gives you exact distance for precise holdover, and the optic identifies heat signatures out to 2000 yards. At 23 oz, it balances capability with manageable field weight. Backed by 24-month warranty and Thermisight's veteran-owned service team.
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See the FLIR Brez RC157 Thermal Clip-On in action — hands-on reviews, field tests & comparisons
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Warranty
2-year limited manufacturer warranty
- Covers defects in materials & workmanship
- 30-day satisfaction return window
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- Purchase price
- $3,499
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- $3,499
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Specifications
- Resolution
- 256×256; Objective: 50mm; Detection: 2000yd; NETD: 50mK; LRF: Yes; Weight: 23oz
Compare detection range & sensitivity
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| Range | 100yd | 150yd | 200yd | 250yd | 300yd | 400yd | 500yd |
|---|---|---|---|---|---|---|---|
| Drop (in) | -10.2 | -6.2 | 00.0 | +8.6 | +19.9 | +52.1 | +99.1 |
| Hold (MOA) | -9.7 | -3.9 | 0 | 3.3 | 6.3 | 12.4 | 18.9 |
Simplified point-mass model with G1 drag correction. For reference only — always confirm with your own chronograph and field testing.
FLIR Brez RC157 Thermal Clip-On ballistic engine
This scope's built-in LRF and ballistic calculator can store custom drop profiles. Enter your zero data above, then program the holdover values into the scope's ballistic profile manager for one-button range-corrected shooting.
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Mounting & Alignment
- •Ensure the clip-on is properly aligned with your day scope's objective — misalignment causes image shift.
- •Re-check mount tension after the first 5 shots; mounts can settle during initial use.
- •Use only the included mounting hardware — aftermarket mounts may not maintain alignment.
Lens Care
- •Clean both the front (thermal) and rear (optical) lenses with microfiber cloths only.
- •Keep both lens caps on during storage and transport.
- •Blow off dust before wiping to protect the germanium coating.
Storage & Environment
- •Store detached from your rifle in its protective case.
- •Avoid extreme heat — the thermal sensor degrades with prolonged high-temperature exposure.
- •Store batteries separately for long-term storage.
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