In today’s environment of rising demands on weapon systems, firepower and reliability are the defining parameters of large-caliber small arms. One of the promising entries in the heavy machine gun class is a Browning-type 12.7 mm developed by AKM Group-CZ.
It was conceived as a universal heavy machine gun capable of engaging personnel, lightly armored vehicles, engineering structures and low-flying aerial targets. The weapon combines a high muzzle velocity with consistently stable automatic operation, even under sustained and intensive firing conditions.
Methodology of the range trials.
A comprehensive series of tests was conducted at a European firing range on these 12.7 mm machine guns. Prior to live firing, the weapons underwent a full technical inspection, including checks of all major assemblies and mechanisms: the barrel, bolt group, feed system, sighting devices, and power-supply system. Particular attention was paid to functional stability after repeated field disassembly and reassembly – an essential element of standard reliability-assessment procedures for heavy-caliber weapons.
Live-fire exercises were carried out at distances of 50, 100, 150, and 200 meters in two modes: automatic fire (in bursts) and single-shot fire.
During the trials, the following parameters were evaluated:
– Shot grouping — the dispersion pattern of impacts on the target;
– Trajectory flatness — the angle of bullet drop and in-flight stability;
– Automatic-system behavior under different firing modes.
Live-fire results
During the range trials of the two heavy machine guns, controlled firing sequences were conducted at distances of 50, 100, 150 and 200 meters, using both automatic and single-shot models.
The primary evaluation criteria included shot grouping, trajectory flatness, and the stability of the automatic operating system.
At distances of up to 100 meters, automatic fire delivered the required density of impact and consistent dispersion patterns, confirming the suitability of this mode for close-range engagements. The weapons’ automatic systems operated reliably throughout, with no malfunctions or stoppages recorded.
At ranges of 150 to 200 meters, evaluators observed a shift in dispersion characteristics during automatic fire — an effect typical for heavy machine guns in this class. Under these conditions, single-shot fire produced more controlled results, allowing for tighter management of the mean point of impact and more efficient exploitation of the ammunition’s ballistic properties.
Across the full spectrum of tested distances, single-shot fire demonstrated stable grouping and predictable trajectories, simplifying sight adjustments and enhancing overall target engagement accuracy.
The Browning-type 12.7 mm heavy machine gun developed by AKM Group-CZ thus confirmed its functional reliability and operational versatility. Depending on tactical circumstances, selecting the appropriate firing mode enables to optimize the balance between volume of fire, controllability and precision — broadening the system’s effectiveness across multiple engagement ranges.
