BM-21

&nbsp The BM-21 (Russian: Боевая Mашина Полевой реактивной системы М-21 Boevaya mashina Polevoĭ ryeaktivnoĭ sistemy M-21; English: Combat Vehicle rocket system, Field M-21) was a Soviet multiple rocket launcher system designed in 1964. Developed from the same principle as the Katyusha, the BM-21 was used as a mobile, long range artillery weapon, as it could fire large, heavy and powerful 122mm rockets in rapid succession (120 per minute) at a range of up to 20 kilometers (12.4 miles).

Battlefield Vietnam
In Battlefield Vietnam, the BM-21 is issued to the North Vietnamese Army. It has space for two players: one driver and one gunner. Its main feature is its exceptionally effective armament, a multiple rocket launcher that the gunner uses. It can fire 12 rockets per reload, with a total of four reloads, at a rate of around 120 rockets per minute. Each rocket is equivalent in power to a rocket from an RPG-2 or RPG-7, and hence can cause devastating damage against almost any target. However, the disadvantage of using the BM-21 is its extremely light armor, meaning it can be destroyed in 1-2 tank shells or rockets. Its rocket launcher also has a great load of recoil, throwing of the player's aim by at least 15° with each shot, making constant firing largely ineffective and inaccurate at long range. As well, the reload for its rockets is very slow, taking nearly ten seconds to be ready to fire again.

Battlefield 3
The BM-21 can be seen at the PLR firebase in the "Thunder Run" singleplayer gameplay trailer.