The TKB-072 (ТКБ-072) is a prototype Soviet assault rifle designed by Nikolay M. Afanasyev (Николай М. Афанасьев) in the late 1970s and early 1980s. It was one of the many experimental designs submitted as part of the "Abakan" trials (Project Abakan), a competitive program initiated by the Soviet Ministry of Defense to find a more accurate and effective replacement for the standard-issue AK-74 assault rifle.
Design and Features
The TKB-072 featured several innovative and unconventional characteristics for its time:
- Bullpup Configuration: Unlike the traditional AK-series rifles, the TKB-072 adopted a bullpup layout, where the action and magazine are located behind the trigger group. This design allows for a shorter overall weapon length while maintaining a long barrel, potentially improving maneuverability without sacrificing muzzle velocity.
- High Cyclic Rate: A notable feature of the TKB-072 was its extremely high theoretical cyclic rate of fire, reportedly around 1,700 rounds per minute. This was achieved through a unique reciprocating barrel system intended to reduce felt recoil and improve controllability during automatic fire, particularly during the initial burst.
- Gas-Operated, Rotating Bolt: Like many modern assault rifles, it operated on a gas-operated system with a rotating bolt for locking.
- Caliber: It was chambered for the standard Soviet 5.45×39mm cartridge, which was the same ammunition used by the AK-74.
Abakan Trials
The TKB-072 competed against numerous other designs in the rigorous Abakan trials. The primary goal of these trials was to develop a rifle that offered significantly improved accuracy, especially in short bursts, over the AK-74. While the TKB-072 showcased innovative engineering, its complex mechanism and the specific design choices might have contributed to its ultimate rejection.
Outcome
Despite its advanced features, the TKB-072 did not win the Abakan trials. The eventual winner and the rifle ultimately adopted to replace the AK-74 was the AN-94 "Abakan", designed by Gennadiy Nikonov, which featured a completely different and equally complex two-round burst mechanism.
The TKB-072 remains an interesting example of Soviet firearms experimentation during the Cold War, demonstrating a willingness to explore radical designs in pursuit of battlefield superiority. Only a small number of prototypes were ever produced.