The Maztech Industries X4-FCS™ (Fire Control System) represents a significant leap in small arms technology, transitioning the traditional rifle scope from a static glass tube into a fully integrated digital sensor suite. Developed in collaboration with Magpul, this system is built around a cantilever mount machined from billet 7075-T6 aluminum, finished with Type III hard-coat anodizing to meet MIL-STD-810 environmental standards. The unit is designed to house a standard 30mm Low-Power Variable Optic (LPVO) while adding a complex layer of computational power. It is powered by two rechargeable 18650 batteries, though it maintains a failsafe architecture that allows the user to utilize the optic’s physical etched reticle even if the electronics are powered down or compromised.

The core functionality of the X4-FCS lies in its internal “weather station” and the integration of the Applied Ballistics® solver. The device contains an array of onboard sensors that constantly monitor barometric pressure, temperature, and humidity, as well as real-time motion data including pitch, roll, and heading. By fusing this atmospheric and positional data, the system calculates the exact ballistic solution for the specific ammunition profile selected by the shooter. This information is then projected as a high-brightness, daylight-readable green digital overlay within the shooter’s field of view. This “smart” reticle automatically adjusts for rifle cant and ballistic drop, providing a precise point of aim without requiring the shooter to manually “dial” turrets or calculate holdovers.

Connectivity is a hallmark of the X4-FCS architecture, utilizing a combination of Bluetooth Low Energy, Near-Field Communication, and Ultra-Wideband (UWB) radio for secure, low-probability-of-intercept communication. This allows the mount to act as a central hub for a modular ecosystem. When paired with the X4-LRF (Laser Rangefinder), the system can instantly update the digital reticle based on the distance to the target. Furthermore, when integrated with Magpul’s smart magazine technology, the HUD displays a real-time round count, significantly enhancing the shooter’s situational awareness. This ecosystem is managed via a dedicated mobile app that can store up to thirty distinct ballistic profiles, which are synced to the mount via NFC or Bluetooth.

Operational utility is maintained through a 1.93-inch optic height, which provides a more “heads-up” shooting posture compatible with modern gear and night vision integration. The digital reticle offers an expansive adjustment range, capable of providing visual holds for up to 115 MOA of drop, well beyond the typical capabilities of standard LPVO reticles. Because the system is designed for professional and military use, it adheres to strict ITAR regulations. The X4-FCS essentially functions as a miniaturized version of the fire control systems found in main battle tanks, compressed into a lightweight, rail-mounted package that brings unprecedented precision to the individual marksman.

The software interface of the X4-FCS is managed through the Maztech Companion App, which serves as the primary gateway for configuring the system’s digital brain. Within the app, users can build highly specific profiles by inputting critical variables such as bullet weight, muzzle velocity, ballistic coefficient (G1 or G7), and sight height. Once a profile is created, it is transferred to the mount via a secure Near-Field Communication (NFC) tap or a Bluetooth link. On the device itself, the user interface is navigated using a physical control dial or an optional rail-mounted remote. This allows the shooter to toggle between active profiles or manually override environmental inputs if they prefer to use data from an external wind meter.

Calibrating the Applied Ballistics® solver is a multi-step process designed to ensure the digital reticle tracks perfectly with the physical world. After the initial mechanical zero of the LPVO is established at 100 yards, the user enters “Digital Zero” mode to align the electronic aiming dot precisely over the physical crosshairs. To further refine the solution for long-range precision, the system utilizes a feature called “Trueing.” This involves firing at a known distance—typically the transonic boundary of the caliber—and then adjusting the muzzle velocity or “Drop Scale Factor” within the software until the digital point of impact matches the actual impact on the target. This calibration accounts for the unique barrel harmonics and velocity deviations of the individual rifle.

Once calibrated, the solver operates in real-time, constantly refreshing the firing solution as the internal sensors detect changes in the rifle’s orientation or the surrounding environment. If a laser rangefinder is connected, the process becomes nearly instantaneous: the shooter ranges the target, and the computer calculates the solution based on the current Cos(θ) of the shot angle and atmospheric density. The digital reticle then “drops” to the exact holdover point, effectively removing the need for the shooter to perform mental math or reference a “dope” card under stress.

Maztech Industries X4-FCS- Quick Start Video