A-91

The A-91 was developed by KBP Instrument Design Bureau in Tula as a compact bullpup assault rifle family during the post-Soviet period. It drew on KBP's experience with compact weapons such as the 9A-91 while exploring a layout suited to close spaces and specialist users. The design remained relatively niche, but it illustrates Russian experimentation beyond the Kalashnikov mainstream.

A-91 is notable for its bullpup layout and integrated underbarrel grenade launcher concept, giving a short overall weapon length without giving up barrel length. The configuration was intended to improve handling in vehicles, buildings, and special-operations environments. Its unusual ejection and layout choices show the engineering compromises required to make bullpup rifles practical for different shooters.

The A-91 did not become a mass Russian service rifle, but it is valuable for understanding small-arms innovation in the 1990s and 2000s. It sits near other KBP special-purpose systems and shows how designers tried to address compactness, modular firepower, and ambidextrous use. A richer page turns it from a one-line oddity into a useful small-arms case study.