The SPECPRECISION FCS-4 4-20×50 Fire Control Riflescope features an integrated Fire Control System (FCS) with a built-in laser rangefinder, angle and environmental sensors, Bluetooth connectivity, and app-based ballistic calculation.
Real-time ranging and environmental data are used to calculate elevation and windage corrections, while the resulting point-of-impact (POI) indicator is displayed directly in the field of view for faster, more intuitive precision aiming.
Built with rugged aluminum construction and high-transmittance coated optics for reliable performance and clear visibility.
Wholesale only. Retail sales are not available.
The SPECPRECISION FCS-4 4-24×50 Fire Control Riflescope is an intelligent optical system that combines a traditional second focal plane riflescope with an integrated Fire Control System (FCS). It brings together laser ranging, angle detection, environmental sensing, Bluetooth communication, app-based ballistic calculation, and point-of-impact guidance in one complete platform.
Instead of relying only on manual holdover estimation, the FCS-4 gathers real-time ranging and environmental information, sends the data to the mobile app for ballistic calculation, and returns the calculated elevation and windage correction to the scope. The resulting Point of Impact (POI) guidance can then be displayed directly within the shooter's field of view for a faster and more intuitive aiming process.
The core of the FCS-4 is its integrated fire control architecture. A built-in laser rangefinder measures the target distance, while the internal angle sensor detects shooting inclination. Environmental sensors simultaneously collect key atmospheric information including temperature, humidity, and barometric pressure.
This information can be transmitted through Bluetooth and the integrated wireless communication system to the OBsmart Ultra mobile app. After the ballistic profile is configured, the app calculates the required ballistic correction and sends the resulting data back to the scope.
The system can then provide a calculated aiming reference based on target distance, shooting angle, environmental conditions, and the selected ballistic profile. This creates a connected workflow from range measurement to ballistic calculation and POI indication.
The integrated laser rangefinder provides a measurement range of approximately 5 to 1200 meters, allowing the shooter to acquire target distance without relying on a separate handheld rangefinder.
Range information can be combined with the integrated angle sensor and environmental data to provide the ballistic calculation system with the information required for more accurate trajectory correction.
The FCS-4 supports Bluetooth and wireless communication for connection with a compatible smartphone and the OBsmart Ultra app.
Through the mobile app, users can configure ballistic profiles and use range, angle, and environmental information for advanced ballistic calculations. Calculated elevation and windage data can then be transmitted back to the scope to help adjust the displayed point-of-impact reference.
This connected system is one of the major differences between the FCS-4 and a conventional optical riflescope.
The FCS-4 features a 4-24× magnification range with a 50 mm objective lens, providing flexibility for observation and precision aiming across different distances.
Its optical system uses fully multi-coated lenses with approximately 89% light transmission to provide a bright, clear image while helping reduce unwanted reflections and light loss.
The FCS-4 uses a glass-etched reticle with red and green illumination. The etched structure allows the primary reticle to remain visible even when illumination is switched off, while illumination improves reticle visibility under different lighting conditions.
The adjustment system uses 0.1 MRAD per click with 100 clicks per full turret rotation, providing precise and repeatable elevation and windage adjustment.
| Specification | Low Magnification | High Magnification |
|---|---|---|
| Field of View @ 100 yds | 29.2 ft | 4.8 ft |
| Field of View @ 100 m | 9.7 m | 1.6 m |
| Eye Relief | 106 mm | 88 mm |
| Exit Pupil | 12.5 mm | 2.08 mm |
The main scope body is manufactured from 6061-T6 aluminum with an anodized surface finish to provide a balance of structural strength, corrosion resistance, and long-term durability.
The FCS-4 is designed with waterproof, fogproof, and shock-resistant construction for reliable use in changing environmental conditions.
Unlike a conventional riflescope that only provides an optical aiming reference, the FCS-4 integrates multiple electronic sensors into its fire control system.
Together, these systems allow the FCS-4 to create a more complete ballistic workflow by combining target ranging, environmental sensing, ballistic calculation, and point-of-impact guidance.
The SPECPRECISION FCS-4 Fire Control Riflescope is designed around a simple connected workflow:
Range → Sense → Calculate → Display → Aim
| Magnification | 4-24× |
| Objective Diameter | 50 mm |
| Focal Plane | Second Focal Plane |
| Tube Diameter | 34 mm |
| Tube Material | 6061-T6 Aluminum |
| Finish | Anodized |
| Length | 34 cm |
| Weight | 1065 g |
| Reticle | Glass-Etched Reticle |
| Illumination | Red / Green |
| Battery | CR123A |
| Light Transmission | Approx. 89% |
| Parallax | 10 yds - Infinity |
| Adjustment | 0.1 MRAD / Click |
| Clicks Per Turn | 100 |
| Elevation Range | 24 MRAD |
| Windage Range | 18 MRAD |
| Laser Rangefinder | 5-1200 m |
| Angle Sensor | Integrated |
| Environmental Sensors | Temperature / Humidity / Barometric Pressure |
| Wireless Communication | Bluetooth / Remote |
| Mobile App | OBsmart Ultra |
| Waterproof | Yes |
| Fogproof | Yes |
| Shockproof | Yes |
| Warranty | 1 Year |
Yes. The SPECPRECISION FCS-4 Fire Control Riflescope supports Bluetooth and wireless communication. It connects to a compatible smartphone and the OBsmart Ultra app to access advanced ballistic functions. Range, angle, and environmental data can be used by the app to calculate ballistic corrections, and the calculated data can then be transmitted back to the scope to adjust the displayed point-of-impact reference.
Yes. The FCS-4 features an integrated laser rangefinder with a specified measuring range of approximately 5 to 1200 meters. This allows target distance information to be incorporated directly into the fire control and ballistic calculation workflow.
Yes. The FCS-4 is designed as part of an integrated ballistic fire control system. It combines laser ranging, angle detection, environmental sensing, Bluetooth communication, and mobile app-based ballistic calculation to generate elevation and windage correction data.
Yes. After the ballistic calculation is completed, the calculated correction data can be transmitted back to the scope and used to generate a Point of Impact (POI) aiming reference within the field of view, helping the shooter use the calculated ballistic solution more intuitively.
The integrated environmental sensing system supports temperature, humidity, and barometric pressure data. These environmental factors can be incorporated into the ballistic calculation together with target distance and shooting angle.
The FCS-4 uses the OBsmart Ultra mobile app for compatible ballistic configuration, data communication, and advanced fire control functions.
Yes. The FCS-4 features a glass-etched reticle with red and green illumination. The etched reticle remains visible as an optical aiming reference even when illumination is turned off.
Yes. We provide a one-year warranty for the SPECPRECISION FCS-4 Fire Control Riflescope.
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Scope vtx style rz hd gen2 1-6x24mm LPVO black milsim seriesThe SPECPRECISION FCS-4 4-20×50 Fire Control Riflescope features an integrated Fire Control System (FCS) with a built-in laser rangefinder, angle and environmental sensors, Bluetooth connectivity, and app-based ballistic calculation.
Real-time ranging and environmental data are used to calculate elevation and windage corrections, while the resulting point-of-impact (POI) indicator is displayed directly in the field of view for faster, more intuitive precision aiming.
Built with rugged aluminum construction and high-transmittance coated optics for reliable performance and clear visibility.
Wholesale only. Retail sales are not available.
