The Burston fires 3-round bursts, which provides a balance between the lethality of automatic rifles and the accuracy of semi-automatic rifles.
The Burston is a burst-fire assault rifle characteristically known for its unique three-round burst mechanic. Due to this, the Burston has a lower DPS than calculations suggest. Despite this shortcoming, the Burston performs decently at long ranges, with low recoil and decent damage per burst, provided you land one of the shots on a weakspot. Due to the burst-fire mechanic, the Burston may be uncomfortable to some Tenno, but learning the pattern of the bursts can yield great results.
The Burston design was a source of much speculation as it did not directly fit the design aesthetic of the main factions. At most, it was known that the Burston was either a Tenno or a Grineer weapon; while it has a Tenno aesthetic to a limited extent, it was used by Grineer Elite Lancers prior to the release of the Hind in Update 9.6, and It was also shown in Grineer faction art.
The Burston did appear in the original DarkSector video, where it was used by the Grineer. However, this still didn't clearly depict which faction the Burston originated from, as the connection between this video concept and Warframe is still unclear.