An updated development is the improved RPO-M "Shmel-M" that was shown for the first time at Eurosatory 2006. This version is similar to the original weapon, but has a calibre of 90 mm, a weight of , and an overall length of 940 mm. The system has better ergonomics, an improved rocket, and better ballistics and terminal effects. It consists of a disposable launching tube attached to a reusable fire control unit that includes the pistol grip, electronic trigger and safety, and a folding base with an optical sight and additional rail for an infrared/night vision sight. Effective range is 300 m, maximum sighting range is 800 m, and maximum range is 1,700 m. The thermobaric warhead's blast effect is equivalent to of TNT, comparable to a 155 mm artillery shell. The "Shmel-M" is also known as RPO PDM-A (Rus. Повышенной Дальности и Мощности / "Povyshennoy Dal'nosti i Moshchnosti" — "enhanced range and power") and is produced for the local and export markets. A version with a mechanical sight was adopted on 24 December 2003.